A car left in the ACC position draws about 5 amps a car left in the ON position will draw between 8 and 25 amp depending on the computer and thigns like what accessories are on. I will be disassembling my beeper box this weekend to isolate the "key in ignition circuit" and bypass it. most of the time this is easily done by cutting the wire that is connected to the ignition but in the E if this wire is cut then the box will beep every time you turn on you turn on the light since the box then thinks that you left the light on with the key out of the ignition. Being a automotive 12 volt specialist( glorified alarm and stereo installer) I should be able to find a solution with no problems and a few diodes. I will post my result and directions when I'm done!!