SO im proud new owner of a 1991 s10, 2.8 v6 5 speed. and i need a little help diagnosing an awkward ground issue im having. cant figure this out for the life of me, ive never seen anything like it.

so what happens is the interior components are all grounded out and not working correctly, i hit the horn and the interior dome light flashes(and no horn), and when i open my door the radio shuts off and loses all memory. i would love to figure this out but i cant find the ground all of these things would have in common. can someone please help me?!?! thanks!

 

there are grounds under the dash, just clean them up and make sure all the engine compartment grounds are good there needs to be one from the engine to the firewall and from the engine to the neg on the batt, clean and see what happens

 

thats my problem, i cant find the ones under the dash.

 

im not to familiar with them, but i would think around the brake booster, or behind the stereo somewhere. 1 thing i would try is to separate the wiring block at the cab and spray with battery contact cleaner and put di-electric grease on the contacts