Cat c15 jake brake not working

Jul 1, 2016 · Posted 7/1/2016 09:27 (#5385186) Subject: Cat C15 jake brake question. Garrett County, MD. So this might be a long post but if you know about jakes on cat engines I could really use your help. One of our trucks is an International 9400 2002 model I believe. Has a cat c15 6NZ in it. When we bought it a few years ago the previous owner had it ...

can I get around smart wheel to work jake. Technician: Cat Man. Yes you can. All you will need to do is mount some switches on the dash and wire them to the ECM. If you can get me your engine serial number, I can tell you the pins you need to connect the switches to. Ask Your Own Medium and Heavy Trucks Question.For several years, and for several reasons, we've advised against the adoption of “Jake Brake” or engine braking ordinances as a means of controlling truck ...Hi I have a KW T800, Cummins ISX CM570, Allison 4500 RDS, cruise control & engine brake not working. I have checked the engine brake & wiring harness from ECM to brake working fine when voltage applie … read moreLooking for a wiring diagram for the jake brake on a Cat C13 serial number KCB23614. Truck is setting a check engine light with codes 121-5. Driver stated the jake doesnt work as well as it used too. … read moreWith out cats ET I would check under valve cover area first check by activating each solenoid.This will tell if you need to check electrical wiring back to the ecm then to the brake switch then to the control dash brake switch.Note: I don't wait for the 30 seconds, either, on jake adjusting screw(I just "overtighten against feeler gauge", then back off to adjust), BUT CAT "VVA adjustment" is different= yes I crank down, on screw against feeler gauge, and wait for oil to relieve = it does make a difference, on those VVA adjustments(for those later engine= ACERT). …DO NOT remove engine brake housing at this time.-Check housing torque (80 ft. lbs.)-Repair as necessary. (B) Hydraulic Fault: Retarder is NOT operating properly (low on power) and NO active engine warning codes when engine brake is applied. Check for correct engine oil level. (8) Add oil if necessary.-Oil pressure test at engine brake may be ... 2004 Cat C15 in a Peterbilt 378, VIN. 1NPFXBEX34D830549. Jake brake is not working. Checking for voltage at the power supply to the Jake on off switch with a power probe, key on engine off, it shows 12 volts with the buzzer and red light on.

Cat man nee some info this time C12 yhb98380 injector hold down torque rocker arm stand and jake brake torque values. and ... i have got a log truck with a 3406c serial # XXXXX had to change a head gasket and also replaced head just to be safe.jake were working fine anyway to the ... I have a C15 cat engine non-acert in a 2003 Western ...Working With Us; Technologies; Service, Parts & Support; Demo Vehicles; About Jacobs; ... Give your industry-leading Jake Brake® the maintenance it deserves to ensure the increased safety, greater speed control, and extended brake life that you have come to expect. ... CAT Parts & Service: CAT : 3406E, C15, C16, C18 : 340 SERIES : 143-6628 : ...The bolt and 3 large nuts torque to 75 foot pounds. The small 3/8 nuts torque to 35 foot pounds. Cat Man, Caterpillar Engine Expert. Category: 10,345. Experience: 23 Years Caterpillar Engine experience. Verified.diagnosing jake brake solenoid. repairing vva solenoids connector.Cat Man. Cat Engine Expert. Vocational, Technical or Tra... 5,355 satisfied customers. On our 2003 k104 with a cat c15 6nz, we have low engine. On our 2003 k104 with a cat c15 6nz, we have low engine brake, no medium and low on high. We have swapped engine brake controllers with … read more.Hi, Iam working on a c-15 Cat engine in a 2000 Peterbilt Hi, I'am working on a c-15 Cat engine in a 2000 Peterbilt truck. The engine serial number is XXXXX the problem I have is the Jake Brakes are sticking on in the low and high positions when you try and …

I got cat c15 motor with engine brake issue , it shut down the truck when we turn engine brake on , I opened the valve cover and press the solenoid button Mannually and it get keep pressed and not come back and when we switch off the solenoids come back to normal position , so we disconnect the solenoids wires and press the button they all started working good , so looks like some electrical ...0. Mar 9, 2010. 0. Hi there my husband is a diesel mechanic and he is having troubles so I came here for help. He is trying to fix the jake brake and its not working on a 2000 peterbilt c15 cat. He has a new clutch switch , wire harness is good, new jake brake solenoid, new male plug on head harness, checked wires with ohms meter and was good ...Confirmed the computer is seeing all switches working and high/med/low in Cat ET. Computer knows what is should be doing basically. Set the mode to manual in Cat ET. Tested wiring going from valve cover plug to jake solenoids for continuity. Good. Manually activated each of the three jake solenoids and watched them work.Apr 27, 2016 · Ran idle up to 1500 via cruise control. It ran for 7.30 minutes and quit high idle. Set parking brake and resume high idle. Ran 6.30 minutes and quit, left brake on, reset high idle.... this time it ran 40 seconds, reran test-18 seconds run. Almost acts like a circuit breaker getting hot, trips, and the duration gets shorter each time. Jan 8, 2011 · 2005 c15 acert jakes not working properly...will work on low nothing in medium but kind of on high..have done some research and see that. c15: It runs good..fan solenoid pulses..stays..inside of the firewall. I am building a 2013 389 Pete glider and i put a 05 C15 ACERT BXS in it. It runs good except for no jakes, cruise and the fan solenoid ...

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Cat C15 SDP# ***** IN kenworth T660 .Overhead camshaft went bad removed and replaced along with injector arms. Now I need torque setting and procedure to install component including Jake brakes asap. ... Im working on a cat c15 industrial engine. Serial starts with ldn.Jun 23, 2022 · Latest Version Feature: -CAT C15 6NZ 435-625HP engines with straight pipe sound (Big thanks to Louisiana Truckspotting for sound recording) -More realistic rpm drop speed. -Realistic turbo behavior. -3 stages jake brake. -Max Volume regulation for reduced chance of audio clipping and sound cutting. (Highly recommended to put engine, exhaust ... The Jake Brake is actually an engine retarder, using the kinetic energy of the vehicle’s engine to slow the vehicle without using the service (foot) brakes. When activated, the engine brake alters the operation of the engine’s exhaust valves so that the engine works as a power-absorbing air compressor.The procedure to setting the jake on a c15 is very simple. If you are just replacing the jake then you will only have to set the jake and not the intake and exhaust valves. Turn the engine to top dead center(tdc) for #1 cylinder. There is a place on the right hand side of the engine on the front of the flywheel housing to pin the engine at tdc.May 12, 2015 · Nich1019. Diesel Technician. Vocational, Technical or Tra... 157 satisfied customers. Caterpillar 3406E 6TS in W900. Some times when Jake brake is. Caterpillar 3406E 6TS in W900. Some times when Jake brake is in use going down hill it will not work after a few hits. Then the acceleration pedal … read more. I have a cat 13 motor with Jake brake problems. Jake brake does not work in level 1. It does however work in mode 2 and 3. I get the fault 121-06 low/hi retarder. I replaced solenoids, checked power, … read more

This video is to inform anyone who is trying to install a new injector/jake harness on a cat 3406e or C15 from a 5ek right up to the mbn, using a 425-6526 ha...Hi I have a KW T800, Cummins ISX CM570, Allison 4500 RDS, cruise control & engine brake not working. I have checked the engine brake & wiring harness from ECM to brake working fine when voltage applie … read moreMar 8, 2018 · On our 2003 k104 with a cat c15 6nz, we have low engine brake, no medium and low on high. We have swapped engine brake controllers with another truck and this has not fixed it. A computer has been plugged in and it said the ecu was not receiving a command. Jan 8, 2017 · 2008 peterbilt vin 1XP-XDB9X-3-8D749005. CAT C15 ACCERT engine. Engine brake not working properly. only works in low setting. medium and high setting does not work. all 3 solenoids are new. checked th … read more Working With Us; Technologies; Service, Parts & Support; Demo Vehicles; About Jacobs; ... Give your industry-leading Jake Brake® the maintenance it deserves to ensure the increased safety, greater speed control, and extended brake life that you have come to expect. ... CAT Parts & Service: CAT : 3406E, C15, C16, C18 : 340 SERIES : 143-6628 : ...Aug 1, 2014 · One for trailer stop lamps and one for the trailer hot line. 2005 250 Super Duty Crew. White and Grey. ARP studs, EGR Delete, and SCT from Vivian. CCV re-route, and 4" Magnaflow turbo back. Other trucks:1980 KW Ext hood, 1982 Kenworth Cabover Aerodyne (BJ and the Bear) 2000 and 2003 Kenworth W900's. 2003 Pete EXHD. Hi Cat Man, I'm working a Cat c-15 mxs05899. The truck wouldn't reach full boost pressure and it took a while to get the truck up to full road speed. I scanned it and got 2 inactive fault codes. The f … read more1 Answer. SOURCE: Engine Bolt Torques- 2005 Chevy Impala/3400 Engine. Head Bolts. Step one 37 ft lbs then tignten 120 degrees more. Rocker arms. Step one 11 ft lbs then tighten 90 degresss more. Upper intake. 89 inch lbs. Lower intake.

Oct 29, 2020 · I'm working on a 2004 Cat MBN C15. The jake brake has always given the driver trouble. After closer inspection of the assemblies, I found one of them cracked. It has the Pac Brake brand on it. For some odd reason I was told that only the MBN engines used this particular jake brake assembly.

4. Create an Open Between the Wires of the Suspect Compression Brake Solenoid at the Valve Cover Connector. In order to troubleshoot a 2533-6 or 1072-6 diagnostic code, use the “Compression Brake Low/High Override” on Cat ET. In order to troubleshoot a 2535-6 or 1073-6 diagnostic code, use the “Compression Brake Med/High …Jun 25, 2022 · Check this brake shoe from Amazon. If you choose to use the Jake brake on slick roads or during winter weather, make sure the trailer unit is appropriately lined and straight. This prevents the vehicle from jack-knifing. Before starting the engine, ensure that it runs at appropriate temperatures and is not cold. Pete 379 3406e Cat with a 10 speed and cruise controls on the shifter. The on/off switch appears to be working as when it is 'on' the jakes don't come on when you lift off the throttle, only when the brake is applied. But it won't set at any speed and won't idle up when sitting still.I have a 2006 Kenworth t800 Heavy Wrecker with a c15 CAT we just picked up and the jakes are not working at all. When you flip the switch the retarder light... Home. Forums. New posts Search forums. ... Jake brake issues. Jimmyhoffa816; Mar 30, 2017; Replies 0 Views 764. Mar 30, 2017. Jimmyhoffa816. J. A.To choose a tune-up kit for an engine brake: 1. Turn to the Service Information section of this guide, beginning on page 5, and find the engine model and serial number, and engine brake model being used on the vehicle. 2. Find the appropriate tune-up kit in the Tune-up Kit column. Caterpillar Form Number: RENR2327-00 JAKE BRAKE® RETARDERS DO NOT remove engine brake housing at this time.-Check housing torque (80 ft. lbs.)-Repair as necessary. (B) Hydraulic Fault: Retarder is NOT operating properly (low on power) and NO active engine warning codes when engine brake is applied. Check for correct engine oil level. (8) Add oil if necessary.-Oil pressure test at engine brake may be ... Jan 6, 2021 · 04 peterbilt 379 with a CAT MBN 18 speed Its either a faulty jake control switch or a wiring problem. The reason I say this is because when the jake switch is turned on, it is simply applying a ground to pins 23 and 40 on the ecm. If the switch is not removing ground when turned off or the wire running from the switch has rubbed into a ground, the engine ecm will continue to keep the ...

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2004 Cat C15 in a Peterbilt 378, VIN. 1NPFXBEX34D830549. Jake brake is not working. Checking for voltage at the power supply to the Jake on off switch with a power probe, key on engine off, it shows 1 … read more 05 Peterbilt 379, can someone tell me where the brake pedal position switch is located. I know the approximate located is around the steering column. Can some point me in the exact location of the switch. Forgot to mention that it is the switch that kicks the cruise out when pressing the foot brake. Hello.Jake brakes wont work. 2003 pete 379 c15. Cat told me to… Jake brakes wont work Mechanic's Assistant: What's the make/model/year of your truck? Engine type? 2003 pete 379 c15 Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?To choose a tune-up kit for an engine brake: 1. Turn to the Service Information section of this guide, beginning on page 5, and find the engine model and serial number, and engine brake model being used on the vehicle. 2. Find the appropriate tune-up kit in the Tune-up Kit column. Caterpillar Form Number: RENR2327-00 JAKE BRAKE® RETARDERSIts either a faulty jake control switch or a wiring problem. The reason I say this is because when the jake switch is turned on, it is simply applying a ground to pins 23 and 40 on the ecm. If the switch is not removing ground when turned off or the wire running from the switch has rubbed into a ground, the engine ecm will continue to keep the ...Cat c15 acert sputters and blows smoke when acceleration or on hard pull did 4 cylinder cut out test and injectors checked out fine also checked iva solenoids with cat et and also came Out ok ... We are working on a C15 S/N: NXS29059 that has low engine brake power. The brake is working on all stages. ... While using the jake brake, the …This mod is CAT C15 ACERT engine with straight pipe sound for some SCS trucks and a lot of truck mods. Version 1.0 Feature: -CAT C15 ACERT 435-625hp and 650hp tuned engines with straight pipe sound. -Realistic turbo behavior. -Realistic intake behavior. -Custom sound attenuation for realistic sound fade off.Ran idle up to 1500 via cruise control. It ran for 7.30 minutes and quit high idle. Set parking brake and resume high idle. Ran 6.30 minutes and quit, left brake on, reset high idle.... this time it ran 40 seconds, reran test-18 seconds run. Almost acts like a circuit breaker getting hot, trips, and the duration gets shorter each time. ….

Using jake brake on c15 acert..only works on 4 cylinders..trip code 41. Msx74245. Will fix myself..nothing so far just - Answered by a verified Technician. We use cookies to give you the best possible experience on our website. ... Jake brakes wont work. 2003 pete 379 c15. Cat told me to.2005 c15 acert jakes not working properly...will work on low nothing in medium but kind of on high..have done some research and see that. c15: It runs good..fan solenoid pulses..stays..inside of the firewall. I am building a 2013 389 Pete glider and i put a 05 C15 ACERT BXS in it. It runs good except for no jakes, cruise and the fan solenoid ...Posted 10/7/2014 09:08 (#4113696 - in reply to #4113629) Subject: RE: Jake brake not working. SW Ohio. quick check would be to run a hot wire to the valve covers and see if it is working mechanically, if so then it is the more common wiring problem, lots of switches to go thru to work, could possibly be clutch switch, idle speed switch, oil ...2004 Cat C15 in a Peterbilt 378, VIN. 1NPFXBEX34D830549. Jake brake is not working. Checking for voltage at the power supply to the Jake on off switch with a power probe, key on engine off, it shows 12 volts with the buzzer and red light on.I have a cat c15 in a kenworth w900l the jake brake only works on setting 3 and 1 and it is only hitting on 2 cylenders. - Answered by a verified Technician ... jakes won't work c15 cat 2004 KW 900l Have replaced dash switches clutch switch works. every once in a while the jakes will come on but not very often ...Jake brakes wont work. 2003 pete 379 c15. Cat told me to… Jake brakes wont work Mechanic's Assistant: What's the make/model/year of your truck? Engine type? 2003 pete 379 c15 Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?17 Mar 2022 ... jake brake system which has never worked since I purchased the coach. They said the problem was OEM electrical and would not work on it. So ...Jul 1, 2016 · Posted 7/1/2016 22:30 (#5386352 - in reply to #5385186) Subject: RE: Cat C15 jake brake question. Dearfield Co. my guess is when they flashed the ecm they gave you programing not compatible with your IHC and how its wired . But if thats the case you should also have other issues. I got cat c15 motor with engine brake issue , it shut down the truck when we turn engine brake on , I opened the valve cover and press the solenoid button Mannually and it get keep pressed and not come back and when we switch off the solenoids come back to normal position , so we disconnect the solenoids wires and press the button they all started working good , so looks like some electrical ... Cat c15 jake brake not working, JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. Need to know the torque on the rocker arm assembly hold down for a c15. A cert. I just need to know the torque specs - Answered by a verified Technician., Jake Brake Troubleshooting. Adept Ape 229K subscribers Subscribe 308K views 6 years ago The multimeter model I use to troubleshoot listed on the Amazon Affiliate Link listed right here:..., JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. Is the torque specs for the rocker arms and the jake brake the same for a 6NZ and a C15. 6NZ237349. I'm just trying to - Answered by a verified Technician., 2004 Cat C15 in a Peterbilt 378, VIN. 1NPFXBEX34D830549. Jake brake is not working. Checking for voltage at the power supply to the Jake on off switch with a power probe, key on engine off, it shows 1 … read more, As a matter of fact Jake makes Cat's brake. However it is common for the MXS engines to have hold down bolts break and cause oil to leak and the jakes not to work. I see this a lot. I would remove the housing and inspect. If it is cracked or the bolt is broke, you will see it. ... Working on a c15 acert. Truck came in for Engine retarder not …, I have a 2006 Kenworth t800 Heavy Wrecker with a c15 CAT we just picked up and the jakes are not working at all. When you flip the switch the retarder light... Home. Forums. New posts Search forums. ... Jake brake issues. Jimmyhoffa816; Mar 30, 2017; Replies 0 Views 764. Mar 30, 2017. Jimmyhoffa816. J. A., If it is faulty, the engine ECM thinks you are pressing the clutch and will not allow the brake to work. Here is the troubleshooting for engine brake not working. brake pedal is depressed. If the engine retarder mode is programmed to "Manual", service brakes are not required to activate the engine retarder., 3406E Jake Brake. Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by Newguy333, Mar 5, 2018 . 3406e Caterpillar engine rear Jake brake does not change when activated manually. Front Jake brake operates normally. middle Jake brake pops/sounds whimpy. Any advice would be welcomed., Jake brake stopped working on our 2002 Peterbilt 379. It's electrical. I need a wiring diagram. 2002 Peterbilt 379. It - Answered by a verified Technician., Nov 2, 2016 · The multimeter model I use to troubleshoot listed on the Amazon Affiliate Link listed right here: https://www.amazon.com/gp/product/B0002YFD1K/ref=as_li_tl?... , Cat C15 SDP# ***** IN kenworth T660 .Overhead camshaft went bad removed and replaced along with injector arms. Now I need torque setting and procedure to install component including Jake brakes asap. ... Im working on a cat c15 industrial engine. Serial starts with ldn., MXS1364 cat C15. Mechanic's Assistant: Are you fixing this yourself? What have you tried so far? Removed valve covers, Cyliders 3-4 jakes work on low. Cylinder 1-2 and 5-6 work on medium. On high only banks 1-2 and 5-7 work. The middle bank does not compress the Jake slave pistons. Used scanner and ecm recognizes low medium and high brake position, 2004 Cat C15 in a Peterbilt 378, VIN. 1NPFXBEX34D830549. Jake brake is not working. Checking for voltage at the power supply to the Jake on off switch with a power probe, key on engine off, it shows 1 … read more, Its either a faulty jake control switch or a wiring problem. The reason I say this is because when the jake switch is turned on, it is simply applying a ground to pins 23 and 40 on the ecm. If the switch is not removing ground when turned off or the wire running from the switch has rubbed into a ground, the engine ecm will continue to keep the ..., (Some SCS trucks will don't support because there's no C15 engine in real trucks, also if this mod doesn't work on any mod truck tell me so I can make it support that truck) Feature:-CAT C15 6NZ 435, 500, 550, 595, 625 engines with straight pipe sound (625hp engine also replaced on SCS pete389 and kenworth w900)-Smooth & Realistic engine ..., 2006 CAT C-15 Jake/Engine Brake. Part 2006 CAT C-15 NXS Jake Brake. $399.00 For Information on this or any other engines. Please Call 1-888-310-3539. Create Estimate. Part Info. (269)462-9260 Request Info ITrack Pro Worldwide Diesel Niles MI. $520.00. , Looking for a wiring diagram for the jake brake on a Cat C13 serial number KCB23614. Truck is setting a check engine light with codes 121-5. Driver stated the jake doesnt work as well as it used too. … read more, Here is a list of all items that will cause the cruise not to work.Customer specified parameters (normal operation) Cruise control pause switch. On/Off switch for cruise control and idle control. PTO on/off switch. Set/resume switch. Circuit for service brake switch. , May 12, 2015 · Nich1019. Diesel Technician. Vocational, Technical or Tra... 157 satisfied customers. Caterpillar 3406E 6TS in W900. Some times when Jake brake is. Caterpillar 3406E 6TS in W900. Some times when Jake brake is in use going down hill it will not work after a few hits. Then the acceleration pedal … read more. , 1 Answer. SOURCE: Engine Bolt Torques- 2005 Chevy Impala/3400 Engine. Head Bolts. Step one 37 ft lbs then tignten 120 degrees more. Rocker arms. Step one 11 ft lbs then tighten 90 degresss more. Upper intake. 89 inch lbs. Lower intake., Posted 7/1/2016 22:30 (#5386352 - in reply to #5385186) Subject: RE: Cat C15 jake brake question. Dearfield Co. my guess is when they flashed the ecm they gave you programing not compatible with your IHC and how its wired . But if thats the case you should also have other issues., Its either a faulty jake control switch or a wiring problem. The reason I say this is because when the jake switch is turned on, it is simply applying a ground to pins 23 and 40 on the ecm. If the switch is not removing ground when turned off or the wire running from the switch has rubbed into a ground, the engine ecm will continue to keep the ..., Sep 29, 2019 · Hey Cat Man,I have a Cat c15 serial prefix SDP. Jake brake quit working and not able to bump up to high idle. Drove the truck a few miles and now white smoke coming out exhaust. , May 29, 2010 · I have removed the extra wiring shown on the diagram so all you see is the engine brake wiring. The wire numbered 22-A-.8 is the first wire in teh circuit, it goes from the fuse to the jake switch and the relays. When the jake switch is turned on low power goes to pin 85 on the low relay, it goes to pin 85 on both relays in high position. , Nov 18, 2022 · -Included idle jake brake system Version 1.01.2 Added 4 new engines for the double lowboys heavy haul. 1st is the Grizzly 1200 HP 2nd is the Kodiak 1500 HP 3rd is the T Rex 1800 HP 4th is the Godzilla 2100 HP. Version 1.01.1 Added Rezbilt Pete, Viper V2, and Westernstar 4900. Version 1.01.0 All SCS Trucks are working. , Posted 7/1/2016 22:30 (#5386352 - in reply to #5385186) Subject: RE: Cat C15 jake brake question. Dearfield Co. my guess is when they flashed the ecm they gave you programing not compatible with your IHC and how its wired . But if thats the case you should also have other issues., I got cat c15 motor with engine brake issue , it shut down the truck when we turn engine brake on , I opened the valve cover and press the solenoid button Mannually and it get keep pressed and not come back and when we switch off the solenoids come back to normal position , so we disconnect the solenoids wires and press the button they all started working good , so looks like some electrical ..., C15 acert, jake quit working, only on stage 2, on one it is. c15 acert, jake quit working, only on stage 2, on one it is off , on 3 it is on stage two. replaced 3 stage switch and is still the same ... with the specs for the variable valve lash and jake lash on a Cat C15 Acert with serial number of MXS07573 with a Cat Jake brake VVA's and twin …, Big Rig Jake Brake From Hell Compilation 2021 By Viral Car Compilations.Subscribe and press Like please ,guys :)Authors from my video:0:02 https://www.youtu..., Oct 21, 2013 · This unit originally had a smart wheel, but the switches has worn out and the replacement wheel is no longer available. The unit has been converted to dash switches, which had worked for about 10 thousand miles. Now the complaint is that the engine brake no longer works. The operator says that it would work (cut in and out at times, but now ... , On August 23 ask you . I rebuild a engine c15 cat 6NZ w/ original parts but same injectors not to old about 6 months or 60k miles and the turbo is the same old and miles before of inframe the motor go ... Jake brake quit working and not able to bump up to high idle. Drove the truck a few miles and now white smoke coming out exhaust., I need torque specs fro rocker arms and jake. c15 acert - Answered by a verified Technician ... MXS 44582 what is procedure to replace injectors and specs for rocker shaft studs and nuts to hold down VVA housing / jake brake housing nuts mounted on top of rocker shaft studs to secure ... Im working on a cat c15 industrial engine. …, 01 peterbuilt looking for jake brake relays jake not working and have code for low/high retarder current high and - Answered by a verified Technician ... 2000 peterbilt with cat c12 engine Jake's dont work I want to wire them directly with my own switch ... Jake brakes wont work. 2003 pete 379 c15. Cat told me to.