So the TomTom has been hardwired into my new twin cam 1200, however, it stays on when the ignition is off, so I have to either pull the wire from the mount, or take it out of the cradle. There is only one way of hardwiring it (was done by the same BMW engineer that wired it on my other bike). On my other twin cam, it switches off after the canbus goes off after 30 seconds. Could a software update sort this, or does anyone have any other ideas?

This may be a stupid question, but if I physically turn the unit off, but leave the lead plugged in, will it still draw power?