Thank you so much for the diagram. I haven't finished the wiring as yet. I have installed the bracket, mounted & wired the 20amp breaker for the controller, and have a 60 foot section of 10 gauge Blue Brake wire coiled up in the engine compartment waiting to be fished through the underneath sections of the coach to the front where I will finish the connections. The ground wire is connected to the ground strip in the front and is coiled with the positive wire coming from the breaker. The only wire on the prodigy controller that is left to be connected is the red one which needs to be hooked to the cold side of the coach brake light switch. This one is the most difficult. Camping World is going to finish routing the Blue Brake wire for me as they have a lift to get under the coach better. Only one hour's labor, that's a deal versus me crawling under to do it.
So with this diagram, it appears that I only have to locate wire #102 at the fuse control center in that compartment to hook the red wire to, correct? The relay system shown in the diagram would be for using the UTB controller only, correct?
I installed the same Prodigy wire harness in my car and it was very simple. The cold side brake wire was easy to get to but the coach is a different situation.
Thanks again for your help.
Dr4Film ----- Richard.