I'm still a little unclear as to what you unplug in the engine to plug in the power module. And is it really just plug-and-play after that? No splicing needed for a power supply or such?
FWIW, anyone considering these, Alligator Performance is having an even better sale now. $378 with free shipping, and this Memorial Day weekend, they're offering a sale code for another 10% off. would bring it down to like $340 shipped.
http://www.alligatorperformance.com/pow ... -3534.html