Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
No trailer brake lights. When I turn the key on my tractor
No trailer brake lights. When I turn the key on my tractor tail lights come on and stay on. 2004 freightliner classic xl … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,379 satisfied customers
2000 fld 120, have front marker lights, no rear tail lights,
2000 fld 120, have front marker lights, no rear tail lights, I can jump at trailer pigtail and they go on … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,379 satisfied customers
Park lights not working on 2017 KW. KW T680 2017. No powers
Park lights not working on 2017 KW. JA: What's the make/model/year of your truck? Engine type? Customer: KW T680 2017 JA: Are you fixing your truck yourself? What have you tried so far? Customer: no p… read more
SeanM
SeanM
Fleet Maintenance Manager
High School Diploma
14 satisfied customers
I have a 98 Freightliner fld 120 stopped by store set park
I have a 98 Freightliner fld 120 stopped by store set park brake when came back out the park brake would not release … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2002 Freightliner fld 120 ac in the front is cold
I have a 2002 Freightliner fld 120 ac in the front is cold the is blowing hot … read more
AMANDEEP MAHERU
AMANDEEP MAHERU
1 satisfied customers
2006 freightliner classic abs light for trailer stays on
2006 freightliner classic abs light for trailer stays on even after we replaced trailer module on tractor. Also tractor abs is on anytime parking brake is on. Goes out as soon as parking brake is rele… read more
Bradey V
Bradey V
Certificate
Need abs help. I have a haldex PLC4TRUCKS system with a 5
need abs help. I have a haldex PLC4TRUCKS system with a 5 wire power cord connection. my question is to what pin should I wire the white and yellow wire for in cab lamp on the 7 way pig tail? … read more
Edward Haniewski
Edward Haniewski
General Studies/Automotive
1 satisfied customers
I have brake lights on the tractor but not the trailer.
I have brake lights on the tractor but not the trailer. Replaced the pig tail from The tractor and seemed to work. Checked later in the day and were not working. Is there a separate brake light switch… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
Got all lights except brake lights on my 1996 Freightliner
Got all lights except brake lights on my 1996 Freightliner fld 120. Got a truck and pulling a dump trailer … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
Its a 2008 kenworth dump truck. 2008 kenworth t800 dump
its a 2008 kenworth dump truck JA: What is the make/model of your car? Customer: 2008 kenworth t800 dump truck JA: Are you fixing your vehicle yourself? What have you tried so far? Customer: brake lig… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
97 freightliner fld 120. Right blinker works but when brake
right blinker works but when brake is applied the signal freezes. same thing happens when flashers are on. located brake relay on firewall and unplugged but had no effect on situation. … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
Right turn signal works on tractor not trailer dash and
right turn signal works on tractor not trailer dash and trailer lights just stay on while tractor flashes front and rear … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
2000 freightliner FLD 120 was working fine and then driver
2000 freightliner FLD 120 was working fine and then driver turned off tractor mechanic check oil mechanic put 1 gallon of oil in tractor driver went to turn tractor back on and nothing happened total … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,379 satisfied customers
Head lights on 96 freightliner fld are coming on when switch
Head lights on 96 freightliner fld are coming on when switch is on. But I don't have marker lights or tail lights. I've changed panel relays,both headlight relays, fuses, head light switch, and dimmer… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have no brake lights on my semi trailer. All the lights work
I have no brake lights on my semi trailer. All the lights work on truck and trailer except the trailer brake lights, tractor brake lights work. The red wire coming out of the electric pig tail on truc… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
On this 1999 freightliner fld 120, 60 series. I have a light
On this 1999 freightliner fld 120, 60 series. I have a light problem. When the head lights are on the marker and tails are not only on tractor. The trailer is fine. Already changed the light switch. I… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
2011 freightliner Coronado, with the marker light switch on,
2011 freightliner Coronado, with the marker light switch on, I have normal lighting but when I turn the headlights on, all the clearance lights on the tractor and all the lower lights and tail lights … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
i have a 1998 freightliner fld 120 with a detroit. Parked it
i have a 1998 freightliner fld 120 with a detroit. Parked it and then would not start the next morning. turned key, dash cycled as usual and wouldnt start. Replaced the the trs sensor and still no sta… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
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Daniel Wilson

Daniel Wilson

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Jeremy

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cumminsdr

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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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