Thanks for quick reply, weren't expecting one that swift!
I'm no electrical genius and so don't know exactly what conversion has been done - to be honest until I spoke to someone with another the other week I thought they were all 12v so wasn't really looking for oddities. Now I'm wondering if someone has just changed all the 6v stuff for 12v and then added a 12v battery. So I'll wait for the weekend (hissin down at the mo) and take seat/gen cover off, etc and get as much info as poss. Many thanks again
ps is there any thing obvious (to you) Ishould be looking for?
Mick