Unwilling to spend the normal amount on a heated jacket I first bought one from Maplins and rewired it for the bike but due to a paucity of elements it provided little heat. ?40 wasted! Then Gypsy found this site:- heat4jackets.com and I bought the element wire for about ?15, spent a good hour or so threading it through the lining of my Belstaff, used an inline fuse I already had and the plug and socket I had bought for the first attempt and hey presto. warm as toast. the guy on the heat4 site is very decent and prompt so anyone looking for cheap heat I recommend his system.