I just got the garmin 255w and I want to mount it on the far left side of the wind shield. I know how to remove the pillar trim but how do i get the plug from there to the cig lighter, or can i wire it some other way?

There are some older threads if you try "advanced search".

Here is one:

http://www.tundrasolutions.com/forums/electrical-and-computer-systems/154719-hardwired-power-for-portable-gps/

Be careful of the air bag stuff behind that piece of plastic if you have the SRS Airbags!