Yeah, that's the one, this way, i can run the stock radio, tape, (cd changer, once i connected it up again) when the empeg is home. I live in NJ, so its i dont like to leave the empeg in the car when its cold out, and if i forget and leave it at home, or for a short trip somewhere and its 20 below, i rather leave it home and listen to the stock system. This has worked out great for me so far.