(EDIT: Sorry misread your post... taking the 478 is what you wanna do... So you probably have to use mapsource. Sorry..)
Dont hold me to it but I recall having to use mapsource on the pc to do anything with those damn things. I can't lay my hands on mine right now (I think its in our tender) but we have 4 different garmin units and share bottom numbers on them all by using mapsource, pc interface cables, etc, cards, etc...
How about just taking your 478 with you? Its got an internal antenna right? Charge the battery or bring the cig lighter plug if you've got one. The battery does last forever, just set the backlighting timeout and brightness down.
Good luck!
Last edited by FINSTINCT; 10-10-2009 at 09:51 AM.
Reason: not reading
|