headlights turn off

Mountain dirt · 11-04-2009, 12:18 AM

when i use my high beams and turn them off my headlights sometimes turn off and sometimes they dont, or they will just turn off all the sudden, but if i dont use my high beams at all they do not turn off, i was thinking maybe it was the high beam switch, but i am not sure how it works or how to fix it, has anyone else had this problem? or have any tips? thanks for any help

__________________
2002 2500 4x4, edge juice with attitude, fass 95 4'' tbe exhaust, afe intake, bd tranny tc and pressure loc. kore recon kit.

CoalRoller · 11-04-2009, 02:11 PM

Ive had this problem with older trucks with the dimmer switch on the floor. It was usually a bad dimmer switch. But...

If the lights come back on when you switch from bright to dim you have a bad dimmer switch.

If they go off after you have been running the high beams for a while and you have to wait a while for your headlights to work at all start with your fuse box. If the headlights use a thermal fuse switch it out with a regular fuse of equal value. If this fixes the problem you need a new thermal fuse.

If it blows the fuse check your headlight wiring for shorts and make sure you have good connections at the headlights, headlight switch and also make sure that the fuse plugs into the fuse box tightly.

Look in the relay center under the hood and see if you have any headlight fuses or relays in there. Make sure the connections are tight and if you have a headlight relay try switching it with another one in the box.

If you have installed any aftermarket headlights that draw more current than the factory bulbs try putting the factory bulbs back in.

If you still haven't solved the problem you probably have a bad headlight switch. The high amperage high beams may be heating up the switch to the point you lose connection.

__________________
2002 6-speed, 5 inch straight pipe, Icebox, Edge Comp/Smarty. Isspro pyrometer, mechanical boost guage & electric fuel pressure gauge. FASS 95, Valair kevlar/ceramic clutch...

Dracozny · 11-04-2009, 03:59 PM

check your grounds!
bad ground will result in dim or no light
prev owner of my truck used an incorrect bulb in the driverside assembly and the results were disastrous, bulbs randomly working incorrect high low beams etc.. correct bulb completes ground circuit the correct way resolving problem.

__________________
1999 2500 Laramie 4x4, Longbed, nv4500, goose neck hitch, boost/pyro gauges, raptor 100.

thierry · 11-04-2009, 04:27 PM

hi
have the same one year ago on my ram 1500 1995 4x4, it was dust in the switch near the steering wheel, i blast inside the switch with air pressure and put contact spray in same time on off on off ...20 times or more with current on (lights on) ok until now.
hope this help!
Thierry

11-04-2009, 12:18 AM	#1 (permalink)
Mountain dirt Cummins Fan Join Date: May 2009 Posts: 34 Thanks: 0 Thanked 0 Times in 0 Posts Mountain dirt's Truck Pics	headlights turn off when i use my high beams and turn them off my headlights sometimes turn off and sometimes they dont, or they will just turn off all the sudden, but if i dont use my high beams at all they do not turn off, i was thinking maybe it was the high beam switch, but i am not sure how it works or how to fix it, has anyone else had this problem? or have any tips? thanks for any help __________________ 2002 2500 4x4, edge juice with attitude, fass 95 4'' tbe exhaust, afe intake, bd tranny tc and pressure loc. kore recon kit.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Remove Advertisements Sponsored Links
Dodge Cummins Diesel Forum Advertisement

11-04-2009, 02:11 PM	#2 (permalink)
CoalRoller Cummins Nut Join Date: Aug 2007 Location: Ector, Texas Posts: 404 Thanks: 15 Thanked 24 Times in 24 Posts CoalRoller's Truck Pics	Ive had this problem with older trucks with the dimmer switch on the floor. It was usually a bad dimmer switch. But... If the lights come back on when you switch from bright to dim you have a bad dimmer switch. If they go off after you have been running the high beams for a while and you have to wait a while for your headlights to work at all start with your fuse box. If the headlights use a thermal fuse switch it out with a regular fuse of equal value. If this fixes the problem you need a new thermal fuse. If it blows the fuse check your headlight wiring for shorts and make sure you have good connections at the headlights, headlight switch and also make sure that the fuse plugs into the fuse box tightly. Look in the relay center under the hood and see if you have any headlight fuses or relays in there. Make sure the connections are tight and if you have a headlight relay try switching it with another one in the box. If you have installed any aftermarket headlights that draw more current than the factory bulbs try putting the factory bulbs back in. If you still haven't solved the problem you probably have a bad headlight switch. The high amperage high beams may be heating up the switch to the point you lose connection. __________________ 2002 6-speed, 5 inch straight pipe, Icebox, Edge Comp/Smarty. Isspro pyrometer, mechanical boost guage & electric fuel pressure gauge. FASS 95, Valair kevlar/ceramic clutch...

11-04-2009, 03:59 PM	#3 (permalink)
Dracozny Diesel Freak Join Date: Sep 2009 Location: Linn County, Oregon Posts: 623 Thanks: 3 Thanked 36 Times in 35 Posts Dracozny's Truck Pics	check your grounds! bad ground will result in dim or no light prev owner of my truck used an incorrect bulb in the driverside assembly and the results were disastrous, bulbs randomly working incorrect high low beams etc.. correct bulb completes ground circuit the correct way resolving problem. __________________ 1999 2500 Laramie 4x4, Longbed, nv4500, goose neck hitch, boost/pyro gauges, raptor 100.

11-04-2009, 04:27 PM	#4 (permalink)
thierry Newbie Join Date: Oct 2008 Posts: 18 Thanks: 9 Thanked 1 Time in 1 Post thierry's Truck Pics	hi have the same one year ago on my ram 1500 1995 4x4, it was dust in the switch near the steering wheel, i blast inside the switch with air pressure and put contact spray in same time on off on off ...20 times or more with current on (lights on) ok until now. hope this help! Thierry