GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 1 of 2 12 Last Post byLast Post by
Results 1 to 10 of 18
  1. #1

    Default High beam mod write up

    this mod lets your low beams stay on when you turn on your high beams. This is for 88-98 models only though.

    PARTS LIST:

    1. 4 prong relay(#85,#86,#87,#30 prongs)
    2.16 gauge wire (4 different colors Green,Brown,Red,Black)
    3. conduct
    4. electrial tape
    5. self tapping screw
    6. 4 female wire connectors
    7. 1 ring terminal for battery
    8. 1 ring terminal for ground
    9. 2 side by side wire connectors
    10. 1 inline fuse

    Most of these items I already had. I think I only spent like $10 total.
    You can get the relay and everything else at autozone.

    INSTRUCTIONS:

    The wires that you need to splice into are located between the battery and the pass. side headlight.
    It is not nessecary to remove the headlight but removing the grille will definatley make it easier to access the wires.

    1. Using 1 side by side connector clip a length of brown wire to the brown wire of low beams.
    2. using the other side by side connector clip a length of green wire to green wire of high beams.
    3. make sure you leave enough wire to run to the relay.
    4. locate the relay on the fenderwell, the closer to the battery the better.
    5. using the self tapping screw, attach the relay to the fenderwell.
    6. Run brown wire to #87 on relay with female connector.
    7. Run green wire to#86 on relay with female connector.
    8. Run black wire for ground to fenderwell( I found a bolt that was close to attach the ground. Or
    you could use another self tapping screw.)
    9. attach ground wire to #85 on relay.
    10. Run red wire from #30 on relay to inline fuse then to positive battery terminal.
    11. Wrap wires in conduct, secure ends with electrial tape.
    12. Reassemble everything and your done.
    Last edited by bartlett; 05-27-2009 at 02:19 PM. Reason: MISSPELLED WORDS

  2. #2

    Default

    Great write up, I will try it on my Suburban.

    I renamed the title to make it a little more clear (I thought it was a 4wd high mod) and moved it to the "How-To" section.

    Thanks.
    Gary

    99 K 1500 Suburban
    78 Silverado Big 10 w/factory 454
    00 S-10 Blazer
    1976 Trans Am
    1980 Honda CB900 Custom

  3. #3

    Default

    There are a couple of ways you could go with the 4-High Headlight Mod.....there is a 4-High kit from Stylin Trucks....below are 2 4-High Headlight Mods,
    http://www.stylintrucks.com/parts.aspx?partfamilyid=132

    http://www.stylintrucks.com/part.asp...132&partid=400

    It took all of 10mins to install this 4-High headlight mod kit on my Truck.
    Last edited by 99'HEARTBEAT; 08-07-2011 at 12:55 PM. Reason: Added Infor.

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  4. #4

    Default

    This way is only done on the passenger side. The wires are tied together, from drivers side to pass. side.

    the old dirty dirty

  5. #5

    Default

    Awesome! Thanks for the write-up! I've seen the kits for this for later model trucks, but none for my '75. I'll be doing this very, very soon!

  6. #6

    Default

    great write up

  7. #7
    Sr. Apprentice Snyder729's Avatar
    Join Date
    Sep 2009
    Location
    Southern Oregon
    Posts
    59

    Default

    Great write up thank you =D i actualy did this the day after i read it.
    ------------------------------------------------
    1996 Chevy silverado z71
    *6 inch Rancho Lift|36-12.50-15 Super Swampers*
    *Bullet Rebuilt Motor|Aero Turbine Exhaust*
    *De-Molded & De-Badged|6000k Hid's*
    *Underdrive pulleys|Sierra grill swap =D*

  8. #8

    Default

    This method isn't working on my truck, and I'm having issues getting it back to normal now. I may have hooked up a wire wrong, but I think it's right. When I have the relay set up everything works like normal, but no 4hi. It effectively accomplishes nothing. When I turn the truck off I have to disconnect the +12v to get the low beams to turn off. When I tried to revert back to stock I am getting extremely low voltages from my headlights on the drivers side (the side I did the mod on) now. Any clues?

  9. #9

    Default

    Quote Originally Posted by bartlett View Post
    this mod lets your low beams stay on when you turn on your high beams. This is for 88-98 models only though.

    PARTS LIST:

    1. 4 prong relay(#85,#86,#87,#30 prongs)
    2.16 gauge wire (4 different colors Green,Brown,Red,Black)
    3. conduct
    4. electrial tape
    5. self tapping screw
    6. 4 female wire connectors
    7. 1 ring terminal for battery
    8. 1 ring terminal for ground
    9. 2 side by side wire connectors
    10. 1 inline fuse

    Most of these items I already had. I think I only spent like $10 total.
    You can get the relay and everything else at autozone.

    INSTRUCTIONS:

    The wires that you need to splice into are located between the battery and the pass. side headlight.
    It is not nessecary to remove the headlight but removing the grille will definatley make it easier to access the wires.

    1. Using 1 side by side connector clip a length of brown wire to the brown wire of low beams.
    2. using the other side by side connector clip a length of green wire to green wire of high beams.
    3. make sure you leave enough wire to run to the relay.
    4. locate the relay on the fenderwell, the closer to the battery the better.
    5. using the self tapping screw, attach the relay to the fenderwell.
    6. Run brown wire to #87 on relay with female connector.
    7. Run green wire to#86 on relay with female connector.
    8. Run black wire for ground to fenderwell( I found a bolt that was close to attach the ground. Or
    you could use another self tapping screw.)
    9. attach ground wire to #85 on relay.
    10. Run red wire from #30 on relay to inline fuse then to positive battery terminal.
    11. Wrap wires in conduct, secure ends with electrial tape.
    12. Reassemble everything and your done.

    This is a very cool write up. ............BUT, i got mine from JEGS, for 25 bucks including shiping .
    I could not find relays for that money and @ JEGS everything is included.

    Still, very cool info. THANKS

  10. #10

    Default

    Anything like this for the '04??? I would love to do this.

Page 1 of 2 12 Last Post byLast Post by

Similar Threads

  1. HID Kit. High/Low Beam and Fog Lights.
    By Duncan_Z71 in forum Lighting Discussion
    Replies: 11
    Last: 04-08-2012, 06:34 PM
  2. Write congress about high gas prices
    By ChevyFan in forum Performance & Fuel
    Replies: 2
    Last: 03-28-2011, 03:21 PM
  3. Low Beam To High Beam Headlight Question
    By KSGerry in forum General Chevy & GM Tech Questions
    Replies: 9
    Last: 04-06-2009, 06:58 AM
  4. HID + relay for high/low beam?
    By spazzoid13 in forum Chevy Truck Accessories
    Replies: 4
    Last: 01-28-2009, 09:08 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •