Weird electrical issue

[jzoomer]

Ok what I have is a very weird problem I am generally savvy when it comes to electronics however I am stumped and any input is greatly appreciated!

 

I apologise in advance for the long explanation and poor use of punctuation but I'm trying to cover all my bases and give all the necessary info thanks!

 

The vehicle: 2001 silverado 1500 LT Z71 package 4 door 4x4 with factory tow package and factory rear locker

 

 

The problem: my headlights, map lights, dome light, cargo light, tow/haul mode and door chimer all stopped working at the same time

 

The back story: I was having the common passkey issue on my truck causing the random no start, I got to looking into the issue and hit a nightmare of wiring shoved under my dash (see attached pic) was the reminisces of what seemd to have been a remote start and a host of other wired in accessories, of which none were hooked into anything anymore.

whoever removed everything just left it all connected to the vehicle and left the other end open, after a few hours of trouble shooting and disconnecting everything I could and repairing damaged wiring from splices I had all the aftermarket wiring removed and repaired the damaged passkey wires, I also replaced my ignition cylinder at this time.

 

I put everything back together and tried to turn my headlights on and only my corner markers, dash lights and tail lights came on, I also noticed my map lights no longer worked or my dome light. I checked fuse and the one under the hood was blown, replaced it and still no lights, swapped relays still nothing, ordered new headlight control switch, still nothing.

 

The weird part: I can run a jumper wire from the "hot" wire on the back of the connector for the headlight switch to the "white" headlight wire on the same connector, and the headlights will then come right on, high beams work as well, however my map and dome lights are still not working

 

My temporary fix I have wired in a "push-pull" switch connected to wiring on the back of the headlight switch connector and it works,

 

Also forgot to mention my dash lights won't come on unless the dimmer switch is turned all the way up and clicked into the "dome light" mode but the dome light doesn't come on just all the dash lights

 

Again any suggestions or input at all is greatly appreciated I have exhausted my knowledge. ... thanks in advance! -

[jzoomer]

BTW I'm not a "new guy" I had to make a new account I've been a member for years but I'm a lurker and rarely posted anything I didn't think a new intro post was necessary...

[02suburbanZ71]

Joe! You must go to the dealer and have the tech 2 scan codes to pin point the location or source of the problem. Start by checking, cleaning, and inspecting ALL grounds