M35a2 lights issues

[Haroldmac]

I have a M35A2. Drove it to work yesterday early morning and for some reason the lights went out just about a block away from work. I could see well enough to continue on so i did. The lights came back on. This had happened once before but just thought i had bumped something and it was user error. Any thoughts on what i should check for first on taking care of this issue before it catches me (in the dark). Thanks HaroldMac.

 

[FloridaAKM]

Have you operated the three switch lever that controls the headlights a few times off & on? The contacts can get a coating of non conductive stuff on them that might cause your problem. I keep a spare switch on the truck just for the lights out problem. There are no fuses or circuit breakers in the system!

 

[Haroldmac]

I worked them some yesterday. I will do that today. What about using some of the electrical
cleaner and spraying that one them? Thanks for the reply.

 

[FloridaAKM]

I believe that the switches are sealed, so you would have to work on opening them up to spray anything into the contacts. Operating the switch contacts will do the most good other than replacing the switch assembly!

 

[dmetalmiki]

If the lights 'went out' the re-lit after a while..you could have a short circuit somewhere, and the thermal relay protection is cutting out, and then, back in.

 

[Haroldmac]

I believe that the switches are sealed, so you would have to work on opening them up to spray anything into the contacts. Operating the switch contacts will do the most good other than replacing the switch assembly!

I went and worked the switches back and forth. Guess i will see if that maybe takes are of the issue. I can be kind of dangerous when it comes to wiring. lol. Thanks for the input guys.