97 chevy 2500 major problem

[dj_97]

Try again lol. Replaced my engine harness with one from a 96 vortex k1500 Tahoe. I have no brake lamps, my high beam indicator stays on sometimes it will work when I hit the switch but the wipers come on. Also the headlights don’t change from driving lights to high beam. When the switch seems to work right and then wipers come on, my driving light relay sounds awful. Buzzing and clicking and all kinds of junk. Any ideas? Turn signals work marker lights everything. Please someone help lol

 

[dj_97]

Also guages bounce up and back down once I turn the lights off

 

[GoToGuy]

Where do you start?!? Something thats common to affected systems. Bad grounds with power backfeeding systems giving these crazy operations. Power allways looks for easiest route just like water. If grounds are no good it will find another route if its there. You could find the ground spot for multiple ring terminals, if there is not shiny metal on all including the frame or base metal, the power looking for ground may try to ground back through another ring backfeeding that circuit, rather than going to normal base metal ground. Thats one way to get crazy lights and operations. Another is cross shorted wire within wire bundles/ looms.