Electrical issues?

KATHY OLIVER2

MEMBER
2004 DODGE RAM
5.7L
V8
2WD
AUTOMATIC
244,832 MILES

We are having electrical issues with our truck listed above 1500 5.7 liter Hemi with the running lights, signal lights, and braking lights all in the rear we have. Absolutely no power have tried everything under the sun. So, we just went and bought a new wiring harness from pull a part but are trying to figure out what color sites go to what and how they all need to be connected.

Saturday, March 18th, 2023 AT 12:35 AM

1 Reply

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

Hi Kathy,

If you lost power to all the rear lighting at one time, I doubt it has anything to do with the harness unless it was cut.

I attached the exterior lighting schematic below for you. However, I have a feeling the problem will be found in the TIPM (totally integrated power module).

The TIPM is basically the fuse box under the hood. I've seen many issues over the years with the connectors to the TIPM. Simply put (at least in my mind) they placed too many pins in the connectors. As a result, the pins are very small and prone to damage, corrosion, and breaking.

I'm not sure what point you are at with the wiring harness, but if it doesn't take care of the issue, let me know and we'll check for issues at the TIPM.

Take care and let me know what you find.

Joe

See pics below.

Images (Click to make bigger)