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Old 08-02-2016, 09:02 AM
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Headlights stuck on low beam. No Hi Beam

A few weeks ago, my headlights lost their high beams. I have replaced the headlight dimmer switch under the steering column, I have replaced the headlight switch itself. I have traded out old headlights for new headlights. When I turn on my lights and select low beams, they are perfect. When I pull the lever (the rod moves and the actuator in the switch depresses) I do not get the little blue "High Beam/Bright Light" indicator and my headlights go dark.

Got suggestions on what to try next?

Signed,
In the dark in Maryland

By the way, I video'd the process of removing and replacing the dimmer switch and is posted on my YouTube channel
https://youtu.be/fgCGV2E-ejM

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'92 Wrangler YJ. Malibu Yellow. 9,000# winch, 20" light bar and two 4" LED pods, LED headlights, Bedliner floorboards front and rear, RockCrawler front bumper, Smittybilt rear bumper with hitch, D rings and swing out tire carrier. 2.5L Low Output with K&N Cold Air intake and 19# Bosch four hole injectors, 4" lift, gas shocks, A/R wheels and 32x11.5" Kenda Klevers.
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Old 08-02-2016, 09:59 AM   #2
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You have two sets of power wires to your lights. One for low beam, one for high beam and a ground. Perhaps your high beam power wire is severed or otherwise not bringing power. Put a voltmeter on it and try tracing it back from the lights to the fuse box.

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Old 08-02-2016, 11:32 AM
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Quote:
Originally Posted by Bsw_sc View Post
You have two sets of power wires to your lights. One for low beam, one for high beam and a ground. Perhaps your high beam power wire is severed or otherwise not bringing power. Put a voltmeter on it and try tracing it back from the lights to the fuse box.

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Than ks. I guess I should start at the headlight sockets themselves or start at the dimmer switch? Do you know what voltage it should read?
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'92 Wrangler YJ. Malibu Yellow. 9,000# winch, 20" light bar and two 4" LED pods, LED headlights, Bedliner floorboards front and rear, RockCrawler front bumper, Smittybilt rear bumper with hitch, D rings and swing out tire carrier. 2.5L Low Output with K&N Cold Air intake and 19# Bosch four hole injectors, 4" lift, gas shocks, A/R wheels and 32x11.5" Kenda Klevers.
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Old 08-02-2016, 11:55 AM   #4
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I'd start at the socket that plugs in to the headlamp. If no power start checking the physical wire itself, the fuse box and the switch. Not sure on the voltage, it's been a while

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Old 08-02-2016, 03:33 PM
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Quote:
Originally Posted by Bsw_sc View Post
You have two sets of power wires to your lights. One for low beam, one for high beam and a ground. Perhaps your high beam power wire is severed or otherwise not bringing power. Put a voltmeter on it and try tracing it back from the lights to the fuse box.

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I did as you suggested and saw that the PO had spliced the Red/White wire from the plug attached to the headlight dimmer switch and that it had corroded and burnt through. Whatever it had been spliced to was capped off with a wire nut. This Red/White wire is what powers the high beams. Cut the splice and used a butt splice to re-splice the red/white wire to the bit sticking out of the rear of the plug.

I now have high AND low beams!

Thanks!
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'92 Wrangler YJ. Malibu Yellow. 9,000# winch, 20" light bar and two 4" LED pods, LED headlights, Bedliner floorboards front and rear, RockCrawler front bumper, Smittybilt rear bumper with hitch, D rings and swing out tire carrier. 2.5L Low Output with K&N Cold Air intake and 19# Bosch four hole injectors, 4" lift, gas shocks, A/R wheels and 32x11.5" Kenda Klevers.
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Old 08-02-2016, 03:58 PM   #6
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Good to hear!

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