Anybody know of where i could source a 6v ignition coil  for an RT3,here in the UK,it doesnt have to be original,but the bracket and bolt spacings need to be right,ive also read about dodgy aftermarket coils,so it needs to be half decent quality. 

MarkT often gives the EMGO one a good reference, although I'm not certain about it bolting straight on.

I've often read on this forum that the originals are very reliable, so maybe look for a decent used one at somewhere like twowheelspares.

I got an Emsco one from Spain for a DT 250 and made an aluminium bracket to fit it to the frame of my RT1B.
£24.00 through Ebay . 
If it's the wire that's goosed ,you can, with some grafting skills, replace it. To me, it's easier to make a bracket .
Depends if you want to keep originality or not. 
Works a treat by the way.

Cheers for the the info fellow Enduroers im on the case