No lights

[mgpm35]

Working on an M35A2 and find that the service lights will quit intermittently. The only pattern I've found is when the signals are on for awhile, all lights will go out. It is most common when using the flashers. I'll be running uphill, under 40mph, flashers on, lights on, and they'll go out. Happens also when truck is parked, running, lights & flashers on. After a minute or so, everything comes back on.

Any ideas? Flasher unit?

Thanks for any help.

 

[mangus580]

You are tripping the circuit breaker. Find out why you are drawing too much juice.

 

[mgpm35]

Thanks. I'll get the multitester out and start looking.

 

[m-35tom]

could just be a weak unit, it is inside the lighting switch.

 

[OPCOM]

The connector at the turn signal switch was loose on mine causing a similar isue. Must have vibrated unscrewed. Maybe the connector behind your light switch?

 

[mgpm35]

Thanks M35TOM and OPCOM. It would be nice if it's that simple. I always have a rough time when it comes to running down electrical issues.

When I check it out, I'll post the results.