What they all said. If it’s your thermal breaker, switch inside the headlight switch, you might even be able to feel the heat just by putting your hand on the dashboard. That’s what happened when mine started doing that.
I did actually have higher power high beams, but it started doing it on low beam, so I knew something was up.
I ended up creating my own relay system because I had seen that on some modern cars back in the 80s.
Fixed my problem and I’m still running the original headlight switch. Well, now that I think about it, I think it was the second switch that failed. Not the original.
I have also had to replace floor dimmer switches multiple times.
But they never acted like this. Turning off and on was always the circuit breaker in the switch for me.
When it was the floor switch, you could often get it to temporarily work by flipping it a few times. That’s when you know they’re on the way out.
They do take a beating down there on the floor. But since you have already replaced yours, and any replacement headlight switch will likely do the same thing down the road, you should consider the relay harness.
