No headlights...

[Oystercopy]

I know there's been posts here before, and I looked through those to get any ideas I could. All my other lights come on except the headlights. I know there's been talk here about doing the relay upgrade, but I don't believe that's been done to this car. I did check all the fuses and none are blown. There is, however, what appears to be a relay, directly connected to the fuse box, that might be the headlight relay. The part number on it (it's an original Chrysler part) is 2926327 and I have attached pictures here. I'm simply wanting to check to see if this relay is good, but it has 3 connections and only two of them ohm out. Since its such an old part, I thought about replacing it to see if I get lights. Any advice welcome! - OC

 

[Oystercopy]

OK, well I just did a little more research, and it appears that part number is a Horn Relay and not a Headlight Relay.. bummer... any idea what else might be wrong?

 

[Oystercopy]

OK, so I found a loose wire under the dash, one going into the main connector in the harness, lights fixed. I should have opted to replace that entire harness the last time I had it in the shop.

 

[moparleo]

Ground issue are the number one problem with 60's-70's Mopars.
50 year old wiring harnesses are just a constant headache

 

[Challenger RTA]

Check the foot dimmer switch. It is a weak point. There is a replacement plug for it. The power to the headlights goes through there.
Use a test light to see if you have power there.

Maybe the switch too?

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[Challenger RTA]

I should have opted to replace that entire harness the last time I had it in the shop.

Not really. You would end up fixing the design faults of the new harness too as the old.