Updating maps for magellan
( Puchase the maps at Magellan 3100 already comes preloaded, the USB cable is only for updating the firmware.
There should be a wire that should be grounded into the E-brake wiring. There is not any fix time or day to take Google map image but it updates within 2-4 weeks.This is according to their website as of this posting 4/17/08 I found that you can go to Auto and purchase the mapping updates from them and based on the reviews its a much faster process than getting it from magellan you can but you need to buy the update CD from Magellan. If I had known that, I would have never bought a 3200.