Following on from http://www.mbclub.co.uk/forums/showthread.php?t=61529 Got this http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=350132575672 Didnt like the switches, look like they belong in a austin metro! Anyway, I have a scrap SEC here and so i stole all the bits I needed. 2 Switches, wiring loom & control units. Luckily the SEC uses same switches as a W123. Just binned all the stuff that came with the kit, just used the pads.. Hardest bit is removing the seat trim which is fiddly with leather.. Im quite impressed but didnt have time to sit and wait for my bum to get warm so ill review later.. but seems to do the job. Well worth £65!