If it goes on, then immediatly back off, I would guess that you have some wires crossed somewhere, and this is preventing you from doing any damage.. I would double/triple check all of the wiring, and connections, just to make sure that you have every thing correct. You know that you are getting power to it, so I would check from the switch, to the seat, and go from there.
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2007 Shadow Gray Metalic GXP
K&N Air Filter & More goodies to come.