aftermarket radio stays on when car is off. Ask Question Jeremy Laukkonen is tech writer and the creator of a popular blog and video game startup. Updated on December 02, 2020. Managed to get the stereo out, the unit for the hands free has been spliced into the cables. Locate and pull the accessory power relay. If the fuse blows, you have a short.
Yes, you dont want it hooked to a wire that is live when the car is off. You just answered your own question. Look for a fuse that isn't live when car is off. If that is not an option, which it should be, you could run a switch between the amp and the fuse and just switch the amp off and on as you please.