wiring

Are those clear enough to read? @r3gulator3 I’m not sure why this seems to be over complicated. Power seems to go from fuses to the daytime running light module. From there it goes to the dimmer switch and the fog light switch. Skip all that nonsense for a minute. Key on, headlights on...

I have a 2009 tripac new alternator putting out 14.2 volts . Only getting 12.4 at the control box I removed the mega fuse and replaced it with s 100 amp circuit breaker. I believe I have corrosion in my battery cables. My question is I have a white wire at the control panel wire does it go to...

Truck is 1998 Freightliner classic Peterbilt style removable sleeper. Engine 2000 525 N14 Cummins. Trying to figure out how to wire my engine fan to kick on automatically when needed. Right now only the switch in the truck will control it. It's not a factory solenoid. It was on here when got...

I have a 2012 Peterbilt 388 with a ISX 11.9. When you open the door the tail lights light up real dim, shut the door and the lights go out. If I turn on the key and shut the door, the lights stay on. Did some testing and found out its the turn signal wires that are getting power. They have 8 1/2...

Wires on cb from truck are same color. Need to know which one is positive and which is negative.

Dose anyone have a wiring diagram for power and heated mirrors for a 2004 , 379 peterbilt.. Thanks

Ive been driving are companies Frankenstein.. and just been try to figure out why the power mirror and heater would work. After checking every thing I could think of . I started tracing wire come to find Out someone never hooked the wiring up wow

Need help creating a Frankenstein

Wiring diagram cat 3406e anyone??????

Hello people, I got 2013 Pete 386 and it has 10 gauges above the stereo. I'm looking for the wiring diagram. I noticed all the gauges are linked together like ( batteries ) with one main wire connected to oil temp gauge, and front there gauges are linked together. I'm thinking to upgrade my...

I recently bought a 2013 Cascadia but it has no decent work lights on the back. It has the utility lamps but they are just about useless for what I do. I want to install LED work lights on each flange of the air dam in the back but I'm wondering what would be the best way to wire them.

I'm completely new to this field, have little to no experience in working on these trucks. However, I'm jumping straight into it. Call me stupid, ignorant, or a fool, I'm 26 years old and a recently laid off oilfield Operations Manager, who really just wants to get his own thing going. I...

Is there access to Peterbilt wiring diagrams online.?. We're needing diagrams and repair info for new and old Petes going back to 2008.

My wipers won't shut off, even with new switch ,is there some sort of control module somewhere?

I wired in some stop/tail/turn lights on my headache rack and ran into something I've never seen. I hooked it up as shown in the first pic. I had two others in the shop look at it and said it was wired right. The problem was one light on each side was lighting up backwards. I had to wire it as...

we need the # of a custom harness maker for engine swaps a.s.a.p. thanks in adv.

The next time you replace your generator head you should consider doing this. A little education first. A generator usually spins at either 1,800 rpms or 3,600 rmps. The reason for this is that an 1,800 rpm generator is usually small and only puts out maybe 25 amps. A 3,600 rpm generator puts...

I need a wiring diagram for a Freightliner fl50 with a bild date of 6/03. I can't seem to find any voltage at the fans switch. All the fuses and relays are okay.

I'm trying to find a wiring diagarm for my 99 peterbilt does any body know any links at all

This is a photo I once took of a sticker on the front of a Great Dane trailer that shows how to wire up the light cord socket. A couple years after I took this picture, I made a tight blind-side maneuver behind the commissary at Quantico and pulled all of the wires out of the plug end of the...