Medium and Heavy Trucks

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I have a 2020 peterbilt model pb337. Iwant to install an
I have a 2020 peterbilt model pb337 . Iwant to install an electric brake control for use intowing a trailer with electric brakes. Under the truck are two junction boxes. One box has a seven conductor … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
This owner operator at my work has a dump truck with a
This owner operator at my work has a dump truck with a trailer with a pacer on it and he wants me tomake it to were either the dump truck charges the trailer or that he can hook the trailer. Up kinda … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a 2006 f550 v8. 4door cab chassis I am having issues
I have a 2006 f550 v8. 4door cab chassis I am having issues with the clearance lights, and sending any power (other then 12v charging) to my trailer (trailer works fine with other trucks.)Problem 1) L… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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I have a 2004 GMC dump, w3500 forward cab, and the trailer
Hello I have a 2004 GMC dump, w3500 forward cab, and the trailer lights not working. I put a new 6 prong plug in it thinking that was the problem, but that didn't fix it. I am attaching a picture that… read more
Daniel Wilson
Daniel Wilson
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2009 Mack GU713, 1M2AX09C09M007285. This is a dump truck
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Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Trying to wire a marker int switch on freightliner m2, 2006
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Jeremy
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Certified Truck/Bus Technician
Associate Degree
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Its a 2008 kenworth dump truck. 2008 kenworth t800 dump
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Wayne
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I need the wiring diagram for the truck bed on a 2006 Ford
I need the wiring diagram for the truck bed on a 2006 Ford F-250 6.0. I am replacing the wiring to the 7 blade connector as there is a rats nest (wiring) currently there.… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
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I need to onnect a wire to the transmission ecu for my new
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Daniel Wilson
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I have a 2006 freightliner, single axle, it is a Columbia
I have a 2006 freightliner, single axle, it is a Columbia model, I wish to wire a brake controller for a trailer, the truck has a trailer socket at the back of the truck, the trailer plug needs to be … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
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Right side brake light does not work turn signal does. 2005
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Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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My 2014 Cascadia did not come with a dump valve option and I
my 2014 Cascadia did not come with a dump valve option and I would like to install one. I purchased the toggle switch and the height control valve with dump capability, not sure what else I need. … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,672 satisfied customers
On a 1998 Peterbilt 379, I am having stop light issues. Stop
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Wayne
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Journeyman
Vocational, Technical or Trade Scho
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Hey spanky its roland again hopefully you can help me i have
Hey spanky its roland again hopefully you can help me i have a 1996 ford aeromax with a 11.1L detriot. seems i dont have power coming out of the junction box on the cab for the trailer brake lights. i… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
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I have 2004 international 4400 dt466 I need to know where the
I have 2004 international 4400 dt466 I need to know where the A 12 N wire that goes into the ecm...where does it come out of the ecm and what all it controls?… read more
Andy
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truck /coach technician
Vocational, Technical or Trade School
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Need a wiring diagram for a FLD classic vin# XXXXX
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Toby
Toby
Vocational, Technical or Trade Scho
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Hello, I have a 2000 sterling tractor and my trailer brake
Hello, I have a 2000 sterling tractor and my trailer brake lights are on as soon as the key is turned on and stay on, the underhood relay is getting "switch on' power with key on, also i get power at … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
I have a 2010 kenworth w900l I am having turn signal problems.
I have a 2010 kenworth w900l I am having turn signal problems. My right signal does not work no indicator light no trailer or fender lights but the rear light does work. I have swapped the flasher mod… read more
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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