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I have a 69 Super Bee that will randomly lose the headlights and dash lights after the car has been running for a while. As you can imagine, it's pretty scary stuff when driving at night over a country road! I'm trying to figure out where to begin in diagnosing the problem. Sometimes, all of the lights will flicker and come back on, other times not so much. I can imagine that it might be a scary thing to test once I start making repairs to trace the problem too, because it only happens when the car is driven for a while and it's warmed right up to temperature. Any help is much appreciated!
 

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The headlight switch has an internal circuit breaker that is probably weak and causing the problem. Poor grounds or extra lights can overload the circuit breaker but old/weak units will act like this. A new headlight switch will no doubt fix the problem.

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Randy
 

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Problem is, the light switch is probably more expensive than the car, they don't make them anymore, but that would not have the headlights go out anyway. Check the connection at the bulkhead connection below the steering colum in the engine bay, the headlights are on a direct power wiring and no fuse, so corrosion and bouncing around could make the connection go bad. There is, as mentioned above, two plugs that do go into the switch in the dash panel, which may also be loose or corroded more than anything else.
 

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The headlight switch HAS an internal circuit breaker, gets hot lights go out, cools down, lights back on. If you are able to disassemble the switch you will be able to see the circuit breaker. I have "repaired" many in my day bypassing the circuit breaker.

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Randy
 

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OK, if you say so, never seen it myself in the past 35 years of having three of them. Anyway, if that is the case, it is time to check the wiring for a short in the wiring, which like I said, is wired direct and without an inline fuse (other than the internal one I have never seen, but then again, never had a switch pop like this), so it would make sense that there is a short somewhere. I have, in the past now, had problems with the harness running between the two headlights, and from there, under the battery tray is a second plug that then runs up to the bulkhead connection, had that plug get oily once and it would do this sometimes.
 

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It's not just Super B's. All Chrysler, Ford, GM ,Jeep etc. have self resetting circuit breakers in the headlight switch from the early days until the 2000's. I'm not sure about the newest vehicles with electronic modules but during my working days it was not uncommon for any of them to have this problem at some time. On any I ever had apart the circuit breaker was simply a bi metal set of points that opened when hot and closed when cool. It was considered a safety item for obvious reasons. I'm sure you just forgot about it as I learned about it in grade 10 auto shop in the 60's.

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Randy
 

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My 92 Daytona had them, my 93 has them - in the fuse block under the dash. Little silver cans, like a reed relay. A couple of months ago they tripped and my lights went out while I was parked. First time in my life.
 

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Yeah, OK, I concede the bimetallic strip that pops itself apart, never thought of it as an actual fuse per se, but you are right and I am wrong. I never had to reset one in the sense of pulling it out or reaching under the dash to reset it.
 

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Hey Dana44, all is good. Your integrity is shining bright!!

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Randy




Yeah, OK, I concede the bimetallic strip that pops itself apart, never thought of it as an actual fuse per se, but you are right and I am wrong. I never had to reset one in the sense of pulling it out or reaching under the dash to reset it.
 

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Thanks. When I am wrong, or if I learn something new, I admit my error, and appreciate the education.

Sure hope this helps pryan26, whether a short or a dirty circuit/connection that separates during movement.
 

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Thanks. When I am wrong, or if I learn something new, I admit my error, and appreciate the education.

Sure hope this helps pryan26, whether a short or a dirty circuit/connection that separates during movement.
Thanks so much for the feedback on this one! I was able to track down a switch, but in the meantime, I'll inspect all of the other things mentioned in the thread and I will post what I come up with! Life got in the way, so my project took a backseat, but I'm back on the case!
 
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