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Light harness ?

Discussion in 'Fisher Engineering Discussion' started by tuna, Nov 27, 2011.

  1. tuna

    tuna Senior Member
    Messages: 488

    Can anyone tell me if the truck side light harness from an `05 GM with H13 bulbs will work on a 99 Tahoe?
     
  2. cubicinches

    cubicinches PlowSite.com Addict
    Messages: 1,412

    Where'd you get an '05 GM with H13 bulbs??
     
  3. tuna

    tuna Senior Member
    Messages: 488

    I may be confused on the bulbs.
     
  4. cubicinches

    cubicinches PlowSite.com Addict
    Messages: 1,412

    It's most likely HB3/HB4, which the '99 Tahoe will likely be as well. The harnesses wil plug in, but they won't work correctly as the headlight common is different from '99 to '05. The harnesses can be made to work by re-locating the wires using a pin release tool. Or, just get the correct harnesses.
     
  5. tuna

    tuna Senior Member
    Messages: 488

    Any idea or diagram of how the pins go?
     
  6. cubicinches

    cubicinches PlowSite.com Addict
    Messages: 1,412

  7. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    As long as the Tahoe is the old body style (which it should be for 99) the harness from the 05 will work as both are negative common. Positive common wasn't until 2000 (newer body) on the Tahoe/Suburban.
     
  8. cubicinches

    cubicinches PlowSite.com Addict
    Messages: 1,412

    Ah... True. I was thinking the newer body. '99 Tahoe was the old body only? Now that you say it, I think it was.
     
  9. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Right, the trucks went to positive common in '99 with the body change, Subs/Tahoes didn't get it until they also went to the newer body, in 2000.
     
  10. cubicinches

    cubicinches PlowSite.com Addict
    Messages: 1,412

    Well then he's good to go with the harnesses he has, just the way they are.

    Tuna... Don't pay any attention to what I told you. :blush2:

    B&B is right as usual! :salute:
     
  11. tuna

    tuna Senior Member
    Messages: 488

    Thanks guys,yeah it is the old body 2 door Tahoe.
     
  12. tuna

    tuna Senior Member
    Messages: 488

    Wait a minute,if trucks went pos common in 99 and the Tahoe and Subs went pos common in 2000 How is an 05 gonna work on the 99 tahoe?
     
  13. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Because they were only positive common until '02, they went back to neg common in '03. :waving:
     
  14. tuna

    tuna Senior Member
    Messages: 488

    Cool,thanks B B just made my day.