I have both front headlights out and one has a plug and the other has just 3 connectors. I know which one is ground, question being the other 2 are a high and low beam. How do I determine which is high and and low for correct connection to the headlight.
When I replaced my buckets, I had a similar situation. From my shop log -
June 30th 2002 Thought more about the mis-matched headlight connectors overnite. Decided to abandon the search for a matching connector. Instead, the wiring stub harness female connector was cut off and replaced by three female blade connectors. The main disadvantage with this solution is that I now have to remember and document which wire connects to which terminal (brown-top, black-left, green-right). The connection was finished up with an electrical tape wrapping and the inner fender grommet was placed on the stub harness using the needle-nose pliers trick to spread the grommet opening enuf to get the wires thru.
The sealed beam headlights that were used for about 40 years all had a standardized connector that crossed makes for all cars and trucks. Even the 4-headlight vehicles that started in 1958 used the same 3 pin connector for the high/low beam lights. It doesn't matter what year or make of vehicle you use as a donor- - - -they will all fit and work the same way. BTW- - - -the center pin of the three IS NOT the ground! To determine which headlight pins are used for each beam, I'd suggest using a battery and some jumper leads on a headlight. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
What Jerry said. You can buy replacement headlight connectors at your FLAPS.
Here's a wiring diagram (common goes to ground) [on edit] bartamos beat me to the punch with the diagram.
Last edited by klhansen; 04/15/20225:58 PM.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Sorry for the redundancy! I didn’t see the other two that were right in front of me. I would delete the post the but cat is out of the bag. LOL
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum
1970 Chevrolet C10 Grandpa's -- My first truck -- In progress to shiny Follow the build in the Project Journal 1950 Chevrolet 1-Ton Dually "Ole Red Girl" In the Stovebolt Gallery More pictures here 1951 GMC 9430 1 ton dually--Shiny! | 1972 Chevrolet C20- Rusty- the puzzle box lid for the C10 | 1962 AMC Rambler American- my wife's Parts trucks- 1951 GMC 9300 | 1951-GMC 9430 | 1951- Chevrolet 1300
