Quote: Originally Posted by emumanXM
It's better to use a battery, because once backup power is cut the ephimeris and almanac is loat and it could take up to 45 mins to get a fix
You dont need a battery with the garmin 15-L because it can keep the info for 20 days without power.
here are some pics of the install I did
http://www.mp3car.com/vbulletin/gps/43268-oem-gps-installs.html