I have done a little research and would like to use the Accessory switch and harness with adapter under the seat to wire the gps. I was wondering how difficult it is to run wires under the gas tank. I wanted to do a cheap auto gps Garmin 1450lmt with a Ram mount. I was also wondering if there is an advantage to getting the longer Ram mounts 6 inch as opposed to the 4 inch or 3 inch. Any suggestions on type of gps or mounts or even wiring techniques are appreciated. I know there is power in the headlight, but did not know if I wanted to fool with that. The GPS can be wired directly into the fuse box too. Or it can be connected to the battery tender. Decision, decisions.