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I want to wire up some reverse lights but have a few questions...
On my last truck (97 f250hd) I had a backrack with a pair of halogen lights mounted to it. I had them wired up with a relay and a spdt switch in the cab. For the reverse light signal I tapped into the trailer reverse light wire as it excited the relay box under the hood. So that I would only have to run one wire to the backrack and not have to run it from the back of the truck.
I want to do the same thing on my new 07 f350, but I need to know where to pick up my reverse light signal. Is there a relay box under the hood on this truck? And which wire, on which relay do I need to tap into?