Crew cab c30 cargo light

[justind3030]

My 1986 c30 has an issue where the cargo light constantly stays on as long as the battery is hooked in, weather the switch for the cargo lamp is on or off or the interior switch is on or off, not even sure where to start on this.

 

[HotWheelsBurban]

My 1986 c30 has an issue where the cargo light constantly stays on as long as the battery is hooked in, weather the switch for the cargo lamp is on or off or the interior switch is on or off, not even sure where to start on this.

Probably a wire is hooked up wrong, or a wire is touching something it shouldn't.

 

[PrairieDrifter]

The power wire for the dome and cargo always has 12v. Key on or off. You're getting a short to ground somewhere.

They turn the lights on with ground. Are your dome and courtesy lights operating properly? It seems that if any part of the system has a problem it affects the other lights in some way as well.

Check under the door sill plates and the wiring harness runs up the drivers b-pillar.

 

[justind3030]

The door switch for the Courtesy lights seems bad but still grounds it seems and the done light assembly is missing if i install a new dome light will this fix my issue maybe?

 

[Grit dog]

There’s wiring diagrams posted on here and the internet.
That’s the easiest way to diagnose what’s wrong imo. Especially since you have half a lighting system it sounds like.