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chevy wiring help please!

Discussion in 'Fisher Engineering Discussion' started by Tedd, Dec 17, 2008.

  1. Tedd

    Tedd Member
    from CT
    Messages: 36

    I have searched here and fishers site but can't seem to find the answer so here goes. I am installing 4 port iso to 2002 chevy 2500 for straight blade fisher 3-plug converted plow. I cant find which wires to tap the drl pink wire, purple, and brown. Basicly I dont know which side of plug to tap since there more than one wire to each plug. Probably dumb ques. but I tried to find info anywhere to no avail so any help will be appreciated. Tedd
  2. Brian Simmons

    Brian Simmons PlowSite.com - Sponsor
    Messages: 196

    http://www.fisherplows.com/pdf/27808_091103.pdf - go to page 7

    The Pink goes to the Dark blue wire of the DRL bulb. The brown wire is the parking light wire and connects to the brown wire of the turn signal bulb. Each harness also has a purple turn signal wire. I just installed one on a 2003 HD and it connected to the blue wires. If not sure just use a test light to verify. If I remember right each bulb has three wires with a brown and black to each for parking lights and ground so the only one left is the turn signal wire. This wire color does change on certain years so I cannot guarantee the color as GM made some electrical changes for the 2003 model year that I used as a reference.
  3. dlsderoo

    dlsderoo Junior Member
    Messages: 7


    Thank you for this post I have been hunting for hours for this infomation. Now all I have to do is figured out what fuse toi tap into for the swited accesory line (red wire)

  4. Crash935

    Crash935 2000 Club Member
    Messages: 2,377

    Heater or wiper works good. Stop by napa and pick up some Mini fuse taps, part # NW785132, they slide right over the fuse prongs and have a male spade terminal to slide a female terminal end onto.
  5. dlsderoo

    dlsderoo Junior Member
    Messages: 7

    Thanks crash935
    I'll Pick them up tomorrow. I' ll probably go with the wipers Heats more important :)
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    For a tap location check to see if your '02 has one in the panel labeled as "SEO ACCY"...not all '02 did but if its there use it. That way if you have a wiring issue with the plow harness you won't lose any other important functions.

    Wipers AND heat are both important...no reason to have to choose one or the other. :D

    Brians truck color codes are good. They didn't change from '02 to '03.
  7. dlsderoo

    dlsderoo Junior Member
    Messages: 7

    I ordered the mini tap fuses I'll pick them up tomorrow moring.And my truck is a 03 gmc 2500hd So i'll check out the "SEO ACCY"... to see if I have that .

    for all the help