I posted the same thread a few weeks ago, as I was considering the 22" towmate myself. It's on EBay for $190 with the battery charger delivered to your door. Thinking I had already spent a considerable sum on a new tow bar and base plate, I decided to buy a bulb and socket kit to save money. Well by the time I bought the kit, an umbilical cord, a hole saw blade and assorted electrical connectors, it would have been cheaper and less time to go wireless. In my thread I found they work great and are plenty bright enough... So my advise is go for it!
Steve & Beth - Milton, New York
2006 Monaco Knight 38 PDQ
Ready Brute Elite-2008 Hummer H3