Originally Posted by Arakor
P.*. previous owner did install a car phone. I removed teh antenna, but it would still be wired.
I'm guessing that the cell phone is an older model which was a full 3 watt permanent install and not just a cradle for a handheld model?
If so is the cell phone always on or does it "wake up" when you turn the ignition on?
If it is a fully installed model then locate the transceiver (brains) usually located under the rear seat or trunk area somewhere, there will be cables plugged into to it, an antenna cable, data cable that runs information to the handset and the power connection cable. Disconnect the power cable and retest for your current draw.
Most installed cell phones even while off (sleeping) can draw up to 150 ma of current, more if they are on or have been wired to be permanently on.