Just looked at the owner's man online:
http://www.magellangps.com/assets/manuals/newprod/manual_MRM300_NA_EN.pdf
Goto Radio Shack or someplace online and get the same pin adaptor that fits the unit.
Go buy a battery pack & recharger for a 12v remote control car. Replace the plug it comes with with the one that fits the Magellan. (or if it needs the plug to mate to the recharger, just tap the pin plug into the wire someplace, extend the wire if u need too) Viola!
I did this as a spare pack for my Garmin V. Works great and the battery pack is small.
This view shows 2 packs attached and run to a plug.
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My pics!!'03 Rennie w/all Tupperware
Custom Roof Basket
Mopar Tubular Brush Guard
Garmin GPS V & Laptop w/Nav software
RAM products laptop mount
Maglite w/mount
Rear cargo bay tool cabinet
AllJs Rear Shelf
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