radarbusters.com
I have an Bel RX65 and love it. I can't image a V1 working any better and it's half the price. You can get a hardwire adapter for a couple bucks on ebay. There is a how to that I used around somewhere you should be able to find.
I posted some pics here:
http://img205.imageshack.us/img205/7...t0317smhl4.jpg
http://img143.imageshack.us/img143/9...t0314smbn4.jpg