Seconding mur's opinion - before I did relays sent one night on the side of the road as above, then twice the switch burned/melted, once almost burning the car, garage and house overnight while the car was sitting unused.

You need to fit relays.

Really.

Use the Search feature, read Jeg's threads, look at the cost of a multi function switch and a headlamps switch, think about the joys of being T the side of the road at night without lights, and then get to work.

Thanks everyone! The bullet connection was fraying off. Quick fix! 

Thanks!  I'll give it a look when the weather is slightly more favorable. 

If you have a volt meter i would give it a test on BOTH headlights to make sure your volts/amps are the same at both sockets. It does sound like a ground issue to me. Probably finding a ground through the mounting ring and bucket instead of the wire which will make for an interesting circuit and a pretty dim light.

Sounds like that headlight's ground connection is not solid. If I recall correctly, the headlight grounds come together in a multiple bullet connection in the bundle of bullet connections along the slam panel. They would be the black wires from the headlights back to along the slam panel. Trace that wire from the offending headlight back to that common connection and ensure it does not have any breaks and the connection is solid.

I pulled my car (78 mini) out of storage last month and discovered one of my headlights was dim. I replaced the headlight, and never thought anything more of it until the other day I was coming home and when I turned the lights on, the same light was dim. The other one shines bright.

 

I looked at the connections on both ends (switch and headlight) and they seem fine. But perhaps there is a broken wire somewhere? I tried following the wiring, but other than in the cab and where it goes up into the wing I couldn't find the wiring. Is there something specific I should be looking at? Or somewhere? 

 

I'm not an electrician, but I don't shy away from work either. Hopefully it's something silly I'm not thinking of that would cause one of the lights to be dim. 

 

Thanks in advance.