Hey!! do you have old TomTom GPS model which does not come with bluetooth functionality or you have any other GPS without bluetooth functionality? Here is very interseting article to add bluetooth functionality to your existing GPS. Please do not try it if you are not confident on yourself as you will end up loosing your GPS as well.
Summary of procedure is as follows:
1) open your new TomTom
2) buy bluetooth adapter for non-bluetooth cell phones
3) Drill a hole in the bottom of the back
4) Duplicate the two wires going into the speaker and connect them to that small phone jack
5) pair it with your cell phone bluetooth ear-piece and use it under the helmet.
(Via Instructable, MyDesignum)
Tags: gps-hacks
