This may not work,but i am going to try it anyhow.Was at Wal-Mart earlier today with the wife and my mother and came across a 110 or 12volt back massager with heat.Since it only covers the back area i was hoping i could attach inside a cheap vest and plug into my acc plug on the gs.Will let you know if it works,but for 15 dollars at worst i will have a massage while i watch tv in the house this winter.Ed