No Low Headlight Beam Function

[jwc4248]

I recently lost the low beam function only on my headlights. The high beam function works fine. I have read throught some of the forums and followed some of the suggestions that seemed related, but no luck.I followed the factory service manual trouble shooting guide by checking continuity on the dimmer, it works fine. The factory service manual shows that a red wire with a white stripe in pin location 16 should be hot in the low beam on position. I have none. The manual shows a connector numbered c2 where it enters in the 2nd from the top pin location. Where is this connector ? I am unable to locate the connector. PLEASE any help would be greatly appreciated!James

[wal280z]

The manual shows a connector numbered c2 where it enters in the 2nd from the top pin location. Where is this connector ? I am unable to locate the connector.

On my '77 there is a conector 'block' above where the passenger's legs would be. Follow the main electrical (not EFI) harness in from the engine bay into the cabin and they route to a white plastic connector 'patch panel'. C-2 is the only black connector on that panel, again, for my '77. Different years may have different configurations and colors.

Wayne

[jwc4248]

Thanks I will give this a look, who knows might be loose or corroded. Thanks I will reply with the results.

[jwc4248]

Thanks for the help. I located the c2 connector and took it apart. It was clean and the continuity between the switch and connector is good. I looked at the wiring diagram again. I have been looking at the diagram wrong! The switch doesn't control power. I think it controls ground. Switching between filaments by controling grounds. If I am wrong let me know. If I am correct then I might either have a bad ground in the circut or a broken wire in the low beam circut. Does anyone know where the majority of the electrical grounds are located. It would save me a lot of time and frustration. Thanks James

[jwc4248]

I finally located the correct c2 connector the one in the previous thread is actually the c6 connector {easy mistake} they are both black and both have the same amount of pins. The correct c2 connector is located on the passenger side floor area about where their feet would be under a plastic trim panel, at the carpet edge. I found the red wire with black stripe corroded. Problem solved.

[cheney119]

I had a poor c-2 connection of the rb wire at the junction under the passenger's feet for the same exact thing no low beams. I jumped it because that c-2 connection isn't very user friendly. There's 3 of us that had the bad rb wire and no low beams on different posts.

[dillie327]

you guys rock. my car's been doing this forever... I went through the ENTIRE combination switch, checked fusible links, traced every wire from my switch to the lights pretty much looking for loose connectors or something... but scraped out the green and the RB wire in the C2 connector, and BAM I have lights. woo!