cargo light stays on / dash light turn off when headlight turned on!
 

My 1995 Silverado 1500 has a light issue! The cargo light and interior lights will come on intermittently when the truck is not running and no key in the ignition. And the dash lights and radio display will turn off when the headlight switch is turned on.

Any body have an idea what may be happening? Thx.

RE: cargo light stays on / dash light turn off when headlight turned on!
 

sounds like a corroded ground somewhere..look on the back of the heads