Dismiss Notice



Register Today It's free! This box will disappear once registered!

NO HEADLIGHTS 1994 FORD EXPLORER - HELP PLEASE

Discussion in 'Stock 1991 - 1994 Explorers' started by davisp, February 14, 2018 at 8:10 PM.

  • Searches ExplorerForum.com
    1. davisp

      davisp New Member

      Joined:
      Wednesday
      Messages:
      1
      Likes Received:
      0
      Trophy Points:
      1
      City, State:
      houston
      Year, Model & Trim Level:
      1994 ford explorer
      Hello all. I find this forum most helpful but I cant find this problem.

      1994 ford explorer. leaving for work this morning and I turn on the headlights and all I have are the park lamps, tail lamps, and brake lights all work. No headlights. I try the high beams, they dont work, but the high beam flasher does work. Check all the fuses cant find anything. I was in a hurry so I was going to run a jumper wire from the park lamps to the headlights as a temp fix.

      Well as I unplugged the bulb assembly all the parking lamps went out, but the headlights turned on at that very instant. I checked and the fuse was blown for the parking lamps. So I put a new fuse in and now im back to the original problem. Parking lamps with no headlights. This really baffled me.

      Anybody have any suggestions?

      Thank you
       
    2. Support EF

      Join the Elite Explorers for $20

      Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself, and learn which modifications work without having to experiment on your own. Elite Explorer members see practically no ads, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create more private Conversations, and more. Join Today. Your support is greatly appreciated.


      to hide adverts.
    3. Rhett

      Rhett Let Them Eat Cake Elite Explorer

      Joined:
      May 13, 2000
      Messages:
      4,600
      Likes Received:
      62
      Trophy Points:
      68
      City, State:
      Cape Girardeau, MO
      Year, Model & Trim Level:
      94 Sport 4x4
      The headlight switch can go bad on our trucks, which is fairly common since all that power has been frying it for 20-25 years. I'm not saying that is definitely the problem, but it's a possibility if your wiring is otherwise intact. You can bypass the power running thru the switch with your own harness, or buy the one I'm running.

      I am running the harness from LMCTruck at this link:
      Truck Parts and Truck Accessories
       
    4. Roadrunner777

      Roadrunner777 Well-Known Member

      Joined:
      February 5, 2011
      Messages:
      1,648
      Likes Received:
      16
      Trophy Points:
      48
      City, State:
      Bemidji, MN
      Year, Model & Trim Level:
      94 4x4 Sport 88k
      The part you start with unplugging the lamp assembly has me a little baffled, so I'm ignoring it for the moment. I agree with Rhett on both counts.

      The way the headlight system is designed and wired is not ideal. Power to the headlights has to go from the battery to the switch and out to the headlights through the smallest wire they could get away with. And, the switch is the lightest duty they could get away with as well. Result: Burned out headlight switches, and reduced voltage to the headlights because of the wire size and length. I measured voltage at the bulb compared to battery voltage and there was a 1.5 volt drop because of the wiring. This is significant, given it's a 12V bulb.

      This is such a problem that companies have been making aftermarket wiring harness such as the one Rhett talks about. It has heavy wiring and relays so the path from the battery to the headlights is shorter with heavier wire. And, with the harness, the headlight switch only switches the relays, so the switch won't burn out.

      Advice... first, replace the headlight switch. I think it failed in such a way that maybe it caused the weirdness of unplugging the lamp assembly. It's not an expensive part, but I think you have to remove the dashboard bezel, which is always a chore. The harness may or may not be worth it depending on how and where you drive. I drove a lot at night in the country with deer, so it was an easy decision for me, and worth every penny. Your mileage may vary.

      If the headlight switch doesn't do it, post back, I'll get out the wiring book and help you track the problem down, but I'm about 90% on the switch. Good Luck!
       
    5. Dragon90815

      Dragon90815 93 XL Restore Elite Explorer

      Joined:
      June 22, 2010
      Messages:
      49
      Likes Received:
      2
      Trophy Points:
      8
      City, State:
      Long Beach, Ca.
      Year, Model & Trim Level:
      '93 Explorer 4.0L auto4x4
      Some times the filament can be broken and by moving it cause it to come back on but will go off when bumped. you should be able to see if filaments are good on both high and low beams. bulb number 9004
       

    Share This Page







    We Support Our Troops!