yes if a C4 Bench style which I suspect it is, contact thetford for change kit www.thetford-europe.com
look for 'ask thetford in menu's Tell them what you have and have they a 12volt I mains.
However be warned it's not easy as the blade knob unless the change kit is different needs to also operate the microswitches. Its most likely you'll have to remove the whole unit in order to feed the cable from the pump to switches have words with Thetford about whats involved before purchase. This was one reason why I am sticking to my C4 manual pump and purchasing a manual pump repair kit. The other reason no power no pump so towing you can't flush unless you power up the 12 volt system Mine just turn the pump....then end.
Bob, September 2012
