Update
The 30 AMP relay is for the slide out/parking brake. It ensures the parking brak is set before you can activate the slide out.
Problem is the original wiring. The coach battery supplies power at "all times" to this relay and any time the parking brake is applied (grounding, correct as per Ford wiring) the battery is draining.
This does not seem correct. What am I missing here? I am thinking the power from the coach battery to this relay should come from some other place but the instructions state the slide out can be extended MH on shore/generator/engine or coach power which is all true as wired now.
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