Applicable naman alam ko sa radios, cigarette lighter and radio share the same fuse, depende siguro sa electrical diagram of each car make. Nakakapag sindi ako ng yosi sa ibang sasakyan with the use of the lighter even without car keys.

Get hold of any dead celfone charger or new plug if not available, connect positive terminal to the 9V terminal and same with negative. Plug battery to 9V terminal prior to removing the car battery. Remove 9V battery before attempting to crank the engine to start.