electrics in the dash
 

so my windows wont work when my lights are on.my left trn signal light stays on when the lights are on.my rear antilock comes on and off bt shts off if i psh on the light switch.my ebrake light flickers if i dont psh on the light switch.all my gages dont work except my spedometer and my lights that light p the dash are gone from 45mph to 85mph bt flicker sometimes.so i need some help figuring ot what the hell is going on in my dash.oh and i can hear a crackling noise in my dash.

id say something has gone to ground,

so im gona have to trace every single wire

i would check the grounds first, not 100% where exactly to start, judging by your name if its the old body style 6.9 (early 80s) should be pretty basic as far as wiring goes

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could def try changing the light switch out too, there is alot happening inside that switch:humm:

yeah its an 87.i am buying a newlight switch and wiper switch and some of the wires got corroded