I think Ray has it right with his pictures of the '36 connector. My '37 did not have the connectors and I could not find them anywhere. A knowledgeable person told me that these connectors are notorious for failed connections due to moisture and corrosion leading to failed contacts. He recommended that I hardwire the headlights, while leaving extra length coiled in the headlight bucket in case the bucket had to be removed at a later date. That way you would have plenty of length to reconnect later.
The 3 wires are for the 1) high beam filament, 2)low beam filament in the headlight bulb and 3)parking light bulb. Ground is through the reflector and headlight bucket. Sealed beam headlights did not become universal until 1940.
Kent
Last edited by Lightholder's Dad; 06/21/2020 9:44 PM.