Dave, Yeah thats what confused me, no doubt you know how the m-max connects by fitting inline in the reg/rec wiring so i can only assume the wiring inside the box has somehow broken up causing the leak.
Ive now done the wire splice and junked the m-max but yet to test ride the bike. The earth leak is now down to 0.3 volts rather than 12 so hopefully the next time i take the bike out i'll be riding it home and not in the back of the van
