wireing issues
 

Okay i have replaced every ground wire and conector to the frame but i am still haveing problems. the lights are acting like they are running off of the alternator...you know like when you increase the speed of you lawn mower your lights get brighter.....thats what they are doing. And just last night when i had my wipers on everytime they moved it would shut my radio off. I am just courius to see if any one has any ideas of what it could be. keep in mind that i have replaced all of the frame grounds.

Start checking your harnesses for burns or rub throughs.
That sounds like a Short -broken or crossed wire.
Check around the fuse panel and behind for the misc. broken cut wires from years of bad radio and light power taps.

right at the switch the plug like do melt down so check there and also light switch alone goes bad will do that

thats funny that you mention that crazy bc right after i bought the truck the wires for the lights switch burned off bc the kid i got it from wired both lighting systems together. i replaced those wires and put the factory switch back in. and i did what jackmup said but did not find any rub throughs or cut wires. i did a little experiment and added an extra ground from the engine block to the frame using a left over battery cable from another truck that i had and it fixed the problem

Ground play BIG PART with these trucks

Glad see found the problem