Triumph choppers: How can I find out if the wires have been converted to a negative ground?

look at how it is, was hooked-up?

Triumph choppers: How can I find out if the wires have been converted to a negative ground?norton

use a voltage meter?

is there a battery, or magneto only? if there is a battery, you can trace which wire goes to the frame. if it comes off the negative terminal? you are golden. if it comes off the positive terminal, you know it has not.