Positive or negative earth?
A great many machines of this period left the factory positive earth, and plenty have been turned round since. Establish which way yours is wired before you order a harness or a switch, because the loom, the ammeter and the ignition components all have to agree on polarity. Worth checking the regulator or rectifier at the same time: a bike running an electronic replacement has very likely been changed already, whatever the wiring diagram in the manual says.
What a rewire usually needs
- Harnesses: full looms and sub-looms, in the patterns we can supply
- Connectors: bullet, snap and spade terminals with their insulators
- Protection: sleeving, grommets, P-clips and ties
- Earths and feeds: earth straps, battery leads and fuse holders
Before you cut anything out
Photograph the loom in place and label the tails at the switches and the lamps while they are still connected. If you are not certain which pattern your machine should carry, send the frame and engine number and tell us what electrics are on it now rather than what the book says it should have left the factory with.