Cruise, cargo lights, interior lights issue

dordtrecht5

Regular Cabs Rock
Jul 21, 2009
900
0
16
Wherever I am working
02 LB7

Cruise works fine unless I have trailer plugged in and the headlights come on. DRL and cruise works fine. Where do I start at the diagnosis of this issue?

"Cargo light on" stays on continuously on the message center. Cargo like cannot be activated even ouabing the button, yet the third brake light works fine.

Interior front reading lights will not cone on at all. However, the truck has aftermarket DVD player and the LED dome lights work OK in that unit.

When I was porting my turbo inlet and working in the filter box I noticed that the previous owner had tapped into the headlight wires for something...don't know what yet because I haven't dove into it to find out yet. I assume this tap is for the lights that were installed on the running boards at the rocker panels. Lights were removed by dealer because some were broke.

I'm not electrical savvy, but can make my way around it when I have to do it. I just don't enjoy doing it.

Help is appreciated.

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