Ive got a tom tom on my r, its in a waterproof universal sat nav holder that velcro's to the handlebars. Ive also purchased a duel cigar socket which I've fitted to the handlebars and wired back to the battery with its own inline fuse.
I simply plug the tomtom straight into the cigar socket, its also handy for phone charger and laptop power supply too. It even works my 12volt kettle (but i have to leave the engine running).
Sat nav holder �40
Duel cigar socket �6.50
Both off ebay
Sorry no pics as I still havent worked out how to get them off my phone on to here
