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Thread: FOG LIGHTS: adding them to a gmt900 nnbs that originally came w/o fog lights

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  1. #1
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    FOG LIGHTS: adding them to a gmt900 nnbs that originally came w/o fog lights

    Anybody know what I need to do in order to do this? Do I need to wire from the pcm to the light or is there already wiring?

    I already have the new bumper caps.
    2007 GMT900 CCSB 5.3 VTS2300 Twin Screw Supercharger, Doug Thorley LT's, True 3" Duals into Dynomax Race Bullets, Nelson Tune, 4L80e w/transgo HD2-D, Truetrac, 4.10 r&p
    Need list: Stall, PLX 200 for my crappy AFR, X-pipe, GM 20's.

  2. #2
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    Quote Originally Posted by Chris092183 View Post
    Anybody know what I need to do in order to do this? Do I need to wire from the pcm to the light or is there already wiring?

    I already have the new bumper caps.
    If it was me, I would run them on toggle switch so you have an easy 6hi mod done.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  3. #3
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    Quote Originally Posted by pl4yboy View Post
    If it was me, I would run them on toggle switch so you have an easy 6hi mod done.
    I don't follow the 6hi? I'm not very electronically inclined.
    Not ruling out pl4yboy's suggestion but if I were to do the fog light installation to plug into the pcm would I have to get the pcm reflashed?
    2007 GMT900 CCSB 5.3 VTS2300 Twin Screw Supercharger, Doug Thorley LT's, True 3" Duals into Dynomax Race Bullets, Nelson Tune, 4L80e w/transgo HD2-D, Truetrac, 4.10 r&p
    Need list: Stall, PLX 200 for my crappy AFR, X-pipe, GM 20's.

  4. #4
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    Quote Originally Posted by Chris092183 View Post
    I don't follow the 6hi? I'm not very electronically inclined.
    Not ruling out pl4yboy's suggestion but if I were to do the fog light installation to plug into the pcm would I have to get the pcm reflashed?
    I'm talking about avoiding the PCM completely and mounting a toggle switch inside the cab. 2 way switch. On/Off. 6hi means the fogs, lows, and highs all come on at the same time. This way you would have complete control of the fog lights and they wouldn't shut off with the high beams.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  5. #5
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    Quote Originally Posted by pl4yboy View Post
    I'm talking about avoiding the PCM completely and mounting a toggle switch inside the cab. 2 way switch. On/Off. 6hi means the fogs, lows, and highs all come on at the same time. This way you would have complete control of the fog lights and they wouldn't shut off with the high beams.
    I don't get it. if the fogs, lows and highs are all turned on by the same switch at the same time how could the you have complete control of just the fog lights? Are you saying that when your light dial is on auto all of the lights would turn on and you would still have the option to turn the fogs off by the toggle?
    2007 GMT900 CCSB 5.3 VTS2300 Twin Screw Supercharger, Doug Thorley LT's, True 3" Duals into Dynomax Race Bullets, Nelson Tune, 4L80e w/transgo HD2-D, Truetrac, 4.10 r&p
    Need list: Stall, PLX 200 for my crappy AFR, X-pipe, GM 20's.

  6. #6
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    I said the toggle switch controls the fog lights. You control the fogs... the other lights act normally.


    Fog lights = completely independent of other lights. No tie in at all... anywhere. Fog lights on their own circuit.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


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