In Reply to: Re: Headlights Ground Wire posted by Robert Angney on March 23, 2020 at 12:58:10:
There was no ground wire as built. Rather the lamp grounded through the hood.
One terminal of the bulb connects to a short wire riveted to the headlamp housing.
As previously stated, this only works if the headlamp housing is electrically connected to the ground (originally +) side of the battery.