I'm not positive about Honda/Acura doors, but I do know w/ Mazda's the wiring harness is already there, it's simply plug and play.

I believe the therory holds true for H and A's too. It's cheaper for the factory to install the wiring harness into all the frames, and when it comes down to putting the doors on, they put either power or manual. Therefore if you were to put a power door on the hidges, there should be a wiring harness somewhere near the joint. Try and look for it, see if the harness is there. It could be tucked in the panel behind a plug of some sort.