Negative Earth (Ground) Q & A

Q- In a recent email Bill Dawson says "the ignition seems to be wired for positive earth with the ring terminal on the red wire going to the pillar bolt for the earth connection".

A- The ignition is wired for positive earth but it will work either way by changing the connections - the wiring diagrams are supplied in the kit for both positive and negative earth.

On this subject we often get asked if the voltage regulators will work for negative earth. The single phase and the three phase regulators are made so that the case is isolated from the internal connections so they can be used on positive or negative earth machines.

We also get the odd email asking if there are any advantages to converting the machine to negative earth. The idea is that this is more common and therefore the better way to go. I feel that keeping the wiring stock is probably the better way to go - that way anyone working on the bike in the future can follow the wiring diagrams in the manuals if they need to make repairs. Either way the machine will run just the same.