with reference to that, I have the following:
Brown/Slate - ignore wire tape up
Red/white - connect to dash light positive
Black - connect to a ground/negative terminal
OR - not sure what is alternator 'W' terminal - or does this just goto negative coil terminal ?
Green - Switched ignition positive (via 3A fuse) - not sure which colour wire from ignition barrel this should connect too - is it the brown one ?