I've bought a Bluetooth unit which plugs into the cigarette lighter, I was wondering if you can leave these plugged in when you leave the car and lock it, does it stay 'live' and draw power when the ignition is switched off and the car is sat locked up? Concerned I'll drain my battery. When I switch off my ignition and take the key out, my Bluetooth adaptor still remains lit up? Does the power get cut once the door is closed and the car locked?
Ta.
Ta.
