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Where's the harness?

Discussion in 'Truck & Equipment Repair' started by martin-vin, Oct 8, 2007.

  1. martin-vin

    martin-vin Junior Member
    from maine
    Messages: 4

    I have a 2004 silverado w/ the snow plow prep package. There is a push botton switch on the dash for a roof mounted emergency light. Does anyone know where the end of the harness for that switch is located so I can hook up a light?
  2. flykelley

    flykelley 2000 Club Member
    Messages: 2,124

    Yep it is under the headliner taped to the roof. It should be a brown and also a black wire held up with blue tape.

    Regards Mike
  3. Crash935

    Crash935 2000 Club Member
    Messages: 2,377

    Yup, taped to the headliner, easiest to get to it from the driverside.
  4. martin-vin

    martin-vin Junior Member
    from maine
    Messages: 4

    I just found this bulletin - http://www.gmupfitter.com/publicat/bull.htm - bulletin #27 if you want a look... Part of it reads...

    "Emergency Roof Mounted Lamp Switch This provision includes a dash mounted switch (see Figure 1), a relay, and wiring which is routed up along the Left Hand B pillar and terminates at the roof as coiled blunt cut wires (see Figure 2). There are two blunt cut 12 gauge (3.0mm2) wires, one is Brown (roof mounted lamp power), it is controlled by the dash mounted switch through the relay, the other is Black(ground). The Brown power wire is protected by the 30 Amp SEO 2 fuse which is located in the Underhood Electrical Center."

    Thanks for all your help. I'll have to post some pics when I get it all installed.