I fitted a small loop and ignition controlled solenoid to lock the unit in the dash if the ignition was turned off. I discussed it in an earlier thread, but given the volume of traffic on the board I can no longer find it.
To tell you the truth, it got to be a pain; and I am pretty convinced (after seeing a few Police videos) that if a regular thief wants to steal your car/empeg, then there will be very little to stop him. Solution: remove the unit each time you leave the car, even in the garage.
_________________________
One of the few remaining Mk1 owners...
#00015