It's pretty simple, the car has a stock block heater and the battery heater is just a pad that sits under the battery in the tray (it was also in the car when I got it). I added the charger, actually a 1.5 amp Schumaker unit, that comes with a mounting bracket. I just plugged all three devices into a heavy duty extension cord and routed it to the front bumper. I used electrical ties to secure everything so I only have to deal with one plug.