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I have a prodigy controller and the factory Ford harness was cut leaving just 5 wires. Blue, Black, Red, White and Whitew/ Blue Stripe.
I connected all except white w/blue stripe.
Checked all fuses & relays and they are good.
No power to prodigy.
Looked in engine compartment and saw same 4 wires I hooked up in cab. They were all cut also. They were next to fuse box and running down towards box. I exposed wiring harness to see if the other end was there somewhere & they were not. So I took Prodigy out of cab and hardwired directly in engine compartment to same four wire running to fuse box. Nothing.
What do I do know? Got truck yesterday and of course sceduled to leave at 8am. I'm screwed. Any help?
The black wire in the Ford harness is for running lamps, and isn't used with the Prodigy. USUALLY, blue is power to trailer brake connector; red is signal from brake light switch; white is ground; and white/blue is 12V power to the controller. You might wanna check this with a tester before rewiring.