Wiring can be very intimidating to some people. Thankfully, this kit makes it easy enough for the do-it-yourselfer to figure out. The key fob sends the signal to the receiver; the receiver, which has a 12-volt source, an ignition source, and a ground, is in turn wired to a set of two relays. The relays also have a 12-volt source and ground. From there, there is one wire that operates each individual solenoid in each respective door. The solenoid in each door is already grounded to the vehicle via the mounting bracket. And that is it in a nutshell.