Brandt Posted March 25, 2014 Share Posted March 25, 2014 (edited) When I turn my high beams on they work Ok for a while then they shut off - Leaving me in the Dark!! I have tried to time them and it varies from 30 seconds on 5 seconds off to 4 minutes on and 10seconds off. They also shut off and on while traveling on smooth roads and while sitting still. My initial guess was a relay that was getting hot and shutting itself off. Is there a high beam relay?? If so, where is it??Any other ideas on where to start looking?? Now that the days are getting longer it isn't that big of deal. But, I do want to use the brights to avoid the deer, if I have to drive at night.I'm gonna move this to the Electrical and Lighting section Edited March 25, 2014 by Brandt Quote Link to comment https://www.bigmacktrucks.com/topic/35166-high-beam-issue-on-r-mdl/ Share on other sites More sharing options...
bbigrig Posted March 27, 2014 Share Posted March 27, 2014 Sounds like an excessive load on the high beam circuit in your R-dog. Check for a short in the high beam circuit (floor dimmer switch, dash High beam flash switch, wiring or connections corroded etc.....) Quote Link to comment https://www.bigmacktrucks.com/topic/35166-high-beam-issue-on-r-mdl/#findComment-239413 Share on other sites More sharing options...
gearhead204 Posted March 27, 2014 Share Posted March 27, 2014 since this is in a dump truck I will say pull dimmer switch from floor and look for nastys, you can unplug the sw. and make a jumper wire outta 2 spade connectors and 2 inches of wire. install jumper and you can swap between hi n lo to see if this fixes it, also check the wires in the dash switches look for discolored blades on the connectors if you find discolored parts replace! its cheaper to fix than after a dash fire! Quote Link to comment https://www.bigmacktrucks.com/topic/35166-high-beam-issue-on-r-mdl/#findComment-239444 Share on other sites More sharing options...
Dirtymilkman Posted March 27, 2014 Share Posted March 27, 2014 Actually you have a bad breaker for your headlights. Its a one minute fix. I've had that happen a few times. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35166-high-beam-issue-on-r-mdl/#findComment-239467 Share on other sites More sharing options...
thomastractorsvc Posted March 27, 2014 Share Posted March 27, 2014 Actually you have a bad breaker for your headlights. Its a one minute fix. I've had that happen a few times.This is the answer to your problem. Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/35166-high-beam-issue-on-r-mdl/#findComment-239483 Share on other sites More sharing options...
Brandt Posted March 27, 2014 Author Share Posted March 27, 2014 Thanx. I'll be home in a week, I'll check all of the above. Quote Link to comment https://www.bigmacktrucks.com/topic/35166-high-beam-issue-on-r-mdl/#findComment-239539 Share on other sites More sharing options...
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