In case anyone cares, I have decided that I must have connected it to the wires for the auto-dim mirror. The reason I suspect this is that when I put the car in reverse, power is killed to the radar detector completely, while in park or drive there is power. It would make sense that you would not want your mirror dimmed while backing up so this is likely a safety feature. So it's still a bit annoying but at least I can explain it now and be fairly certain I haven't done anything bad to it.
Michael |