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I have cleaned all the headlight parts and I have a question regarding the connection wires.
On my headlights, I have one with the part 11 type wire in the image below and 1 with part 12, is this normal ? because LMC seems to indicate that you need 2 of each? However, there doesn't seem to be any room to pass other wires into the bucket.
And on part 11 what is the wire with the round terminal used for? is it the mass? because I don't see this wire on the wiring diagram except if it's the mass
I know two of part 11 (C2TZ-13076-A then C) was used for 1962-1964 but I'm not sure about 1961 since it used a different part number (C1TB-13076-C). The ring terminal is to ground the headlight to the radiator core support.
Dennis Carpenter lists the one part as being correct for 1961-1964 so that might be correct, but I'm not sure since I've never looked close at a 1961.
Or maybe there were 2 different headlight models? one which took the ground on its own on its fixings and 1 which needed a wire to connect to the ground
By part number there was only one headlight used 1961-1966. Since the headlights are made of glass there is no potential ground surface like a metal housing might have. The only way to get a ground to the inside of the bulb is through the metal contacts. Since the same headlight bulb is supposed to be both the low and high beam, they need 3 connection points going to each bulb. One for the ground, one for low beam and one for high beam.
I just looked more closely and a connector is broken... I hadn't seen it and so everything is explained... At least I have confirmation that the little wire is used for ground, thank you very much!
If we first look at part #11 and read down in the text it says it's correct for 1961-1966. But that's not true. 1965 and 1966 didn't use the separate wire from the headlight to the front wiring harness, the headlight connectors were part of the front harness. That's why at least Dennis Carpenter doesn't list 65-66 on their page. So LMC is a bit goofed up there on that listing.
I would bet a dollar that LMC creates their own drawings. That doesn't look like the Ford drawing to me. The connector #12 is possibly LMC trying to show what the 1961 parts catalog shows for that connector, but to me in the 1961 parts catalog it still looks like a 3-prong connector to me. Maybe Ford had a bad drawing in there that LMC copied part of. Hard for me to say, perhaps a fellow 1961 owner can share that detail.
Just for comparison here's the 1965-66 style headlight harness where the two connectors in the upper left go directly to the headlights without the need for the 2 small separate wire harnesses. Still uses a 3-wire connector.
Ah yes it's possible, it's not easy to list all the parts down to the smallest connector without a few small errors, well I will have made a little progress today in terms of knowing my truck!
