New Electrical

[Christopherray]

My old and harness was split and spliced to no end.i just bought a new one , factory specs, and I am putting it in. I am having a few problems. The cab light is staying on, no power to the ac panel and the fuel tanks aren't switching any more. All worked fine before. The ac panel has no power to it, but the tank switch does. And I bought a new switch for the tanks to make sure. Any advice?

 

[AKguy]

When you say “harness” did you replace forward, cab, rear harnesses and the wires controlling the tanks from the switch? The cab light is likely staying grounded for some reason.