Head lights don't work

Discussion in 'Sparky's corner' started by BuickRacer69, Aug 27, 2018.

  1. BuickRacer69

    BuickRacer69 1320, Mark of the Beast

    Hello,

    My head lights quite working, the marker and tail lights work but the headlights won't turn on. I replaced the dimmer switch and the headlight switch. The light green wire isn't getting 12 volts at the dimmer switch. Any suggestions?
     
  2. buick64203

    buick64203 Right wing conservative Staff Member

    Check the fusible link at the starter. Make sure it didn't burn up
     
  3. Golden Oldie 65

    Golden Oldie 65 Well-Known Member

    Could also be where the harness plugs into the fuse box at the firewall. Sometimes corrosion can prevent things like headlights from working. Try wiggling it and see if they come on. If so, unplug it, clean it good and smear it with some dielectric grease. If not, you'll have to get out your trusty test light and track it down.
     
  4. BuickRacer69

    BuickRacer69 1320, Mark of the Beast

    My next step was to check the fusible link, if I am not mistaken, it will be down by the starter? Do you know what color wire by the starter I need to look at?

    I will also check where it goes through the firewall, but currently it does not have power on either side of the firewall so I think the fusible link is the most logical place to start.
     
  5. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    Along with the + battery cable, there are two main feed wires that attach to the big stud of the starter solenoid. The feed wires are 10 and 12 gauge. The smaller one powers just the headlights. Both feed wires have fusible links. The feed wires are brown and black. I don't remember which is the smaller, but the smaller one is for the headlights.

    solenoidwiring.jpg solenoidwiring.jpg
     
  6. Ken Mild

    Ken Mild King of 18 Year Resto's

    Larry what does the "S" and the "R" stand for?
     
  7. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    S stands for solenoid wire. This is the wire that gets 12 volts when you twist the key to crank the engine. R is for resistance wire bypass. This wire supplies 12 volts to the coil when the starter motor is cranking the engine.
     
    Ken Mild likes this.
  8. Ken Mild

    Ken Mild King of 18 Year Resto's

    Ahh yes thanks!
     
  9. BuickRacer69

    BuickRacer69 1320, Mark of the Beast

    Update, the issue is inside the car and is something under the dash. My car came from Oklahoma and a lot of the wires are brittle from baking in the sun for 50 years. This winter I want to buy a new wiring harness and rewire the whole car.

    I have been looking at the Painless kits, what do you guys think about those? It does not look like the make a direct replacement for a 69 Skylark. Do you think I would be better off buying one for a 69 Chevelle or the 69-74 "muscle car kit"?
     
  10. buick64203

    buick64203 Right wing conservative Staff Member

    They make an exact reproduction dash harness for your 69. Don't waste your time with universal, make it fit kits. The repro harnesses are plug and play, exact fit. They re a little pricey though at $530. PM Todd on the board. He's a Lectric Limited dealer
     
  11. Chi-Town67

    Chi-Town67 Gold Level Contributor

  12. gsx455-4ever

    gsx455-4ever Gold Level Contributor

    Here's something that will help with Fusible links img168.jpg
     
  13. buick64203

    buick64203 Right wing conservative Staff Member

    Just a side note about fusible links. I could never figure out Dorman crimps a blue butt connector to their GM fusible links. Useless. You have to connect that link to a 10 or 12 gauge wire and a blue butt connector isn't going to cut it. What you need is a step down butt connector. One side fits 14-16 gauge and the other end fits 10-12 gauge.
     
    gsx455-4ever likes this.
  14. gsx455-4ever

    gsx455-4ever Gold Level Contributor

    Yes Jason . When ever I see a Blue Butt Connector in any thing I buy I throw it out . They are useless. I prefer to twist , solder and shrink wrap .
     
  15. BuickRacer69

    BuickRacer69 1320, Mark of the Beast

    Is that $530.00 harness from Lectric Limited just the under dash harness? I wanted to replace all the wiring, including the wires that run to the head lights and tail lights, and get a new under hood wiring harness.

    My car has a stand along fuel injection system, so I do not need much of the factory harness to, but I would like to A) clean up the wiring and eliminate the wiring I no longer use, B) Have new wires so I do not have to worry about old, brittle wiring, and C) update the fuse and relays to modern style fuses.

    Thank you guys for all the advice and help, I am always blow away at the knowledge and willingness to help on V8 Buick
     

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