Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I'm having electrical issue with my 96 Pete 379. I have
Hello. I'm having electrical issue with my 96 Pete 379. I have power to turn on the engine and run it. But all my gauges needles froze where last time they were running and no power to ac or heater. N… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
1997 379 Pete cruise will work at idle but doesn't work
1997 379 Pete cruise will work at idle but doesn't work going down the road. The clutch will shut the cruise off and releasing the parking break will also. Mashing the break pedal will not shut it off… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Lost power to my headlight and marker light switch on 2007
lost power to my headlight and marker light switch on 2007 379 pete … read more
Don
Don
fleet superintendent
Vocational, Technical or Trade Scho
1,631 satisfied customers
Have 1992 379 peterbilt shop ecently replace old wiring.
Have 1992 379 peterbilt shop ecently replace old wiring. Everything dash signal all work but started down road everything goes out all dash everything trailer lights. Could it be ground or … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,672 satisfied customers
Bought a used 1995 Peterbilt 379. Last owner said no issues
Bought a used 1995 Peterbilt 379. Last owner said no issues with headlights. Just got it shipped to me. Turn on headlights dash says low beam is on. Passengers low beam is bright and on drivers side l… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
I'm taking turn signals off my headlights and putting blank
I'm taking turn signals off my headlights and putting blank covers there I took one off put cover on it now turn signal will not flash but will come on and be as bright as a marker light … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,551 satisfied customers
I have a 2009 Peterbilt model 379, please how do you adjust
I have a 2009 Peterbilt model 379, please how do you adjust the headlights … read more
Nasjen Riza
Nasjen Riza
Diesel/Industrial
2 satisfied customers
I have a 1999 w900. when head light and marker lights are on
i have a 1999 w900 . when head light and marker lights are on my brake lights and turn signals wont work. when my headlight and markers are off the brake lights and turn signals work ? … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,672 satisfied customers
On a 99 379 short hood, I just bought, the headlights (4) are
On a 99 379 short hood, I just bought, the headlights (4) are all on and the dimmer switch on the turn signal switch won't dim. It just clicks as you pull it toward you. The bright light indicator is … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,551 satisfied customers
1999 Peterbilt 379, Left front turn signal won't blink with
1999 Peterbilt 379, Left front turn signal won't blink with out headlights or clearance lights on and then it is very dim. With out the headlights on the rear turn signals blink normal. With left turn… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
I am looking wiring diagram 1999 International 4900. i need
I am looking for a wiring diagram for a 1999 International 4900. i need the diagram covering the headlights, brake lights and clearance lights on the whole truck.… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,672 satisfied customers
I have 2007 379 installed grand general head lights and when
I have 2007 379 installed grand general head lights and when I turn on brights the lights go out how do I fix it… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,551 satisfied customers
My dash,cab,tail marker lights quit. High beam headlights,brake,&
My dash,cab,tail marker lights quit. High beam headlights,brake,& turn signals work. I have checked fuses,relays,& circuit breakers, they all appear ok.I have power at all of them, but not to the swit… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
we have a 1990 freightliner fld120 and need a head light
we have a 1990 freightliner fld120 and need a head light ,marker lights,consel,lights , switch there are two power wires ,one for tail lights marker lights, and one for dash lights , two for left and … read more
go-west..
go-west..
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
I have no dash lights or tail lights only top marker lights
I have no dash lights or tail lights only top marker lights all work on same switch. This is on a 1995 peterbilt 377. Also the load light on back of sleeper is not working and the headlight dimmer swi… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
2001 379 Pete when it is hooked to a trailer the tail lights
2001 379 Pete when it is hooked to a trailer the tail lights on truck and trailer went out and the headlights went to high beams and there was now way to shut high beams off.… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Why does my peterbilt 367 semi blow a 20 amp fuse in the power
Why does my peterbilt 367 semi blow a 20 amp fuse in the power G5 fuse location in the engine compartment fuse panel when I use the left turn signal… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
On a 2007 peterbilt wat wires do I need to disconnect from
On a 2007 peterbilt wat wires do I need to disconnect from the headlight switch so jus the headlights com on an not the marker lights .… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
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Daniel Wilson

Daniel Wilson

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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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