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fisher mm2 lights trouble

Discussion in 'Residential Snow Removal' started by shooter56, Nov 11, 2013.

  1. shooter56

    shooter56 Member
    from ct
    Messages: 57

    I bought a 03 Silverado 2500hd and it had the 4 port truck side harness and 3 wire plug in it. Over the summer I found a mm2 plow with the same setup. I really didn't look at it until last Friday, I fixed all the blinker light sockets that were corroded badly, changed the oil and filter and new cutting edge.

    Ok now the trouble I plug the harness in and only the right side low beam comes on, no blinkers running lights, this plow was never on the truck so any idea what it could be. I was thinking a ground could be bad somewhere.


    pat
     
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,926

    Well your gunna have to start test lighting the parking light sockets. Both parking, turn and Gnd!
     
  3. shooter56

    shooter56 Member
    from ct
    Messages: 57

    I got everything working but the drivers side low beam now. I can not figure it out yet.
     
  4. shooter56

    shooter56 Member
    from ct
    Messages: 57

    4 port white label

    The 4 port module is a white label is it the right one for a 03 Silverado?
     
  5. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,926

    Did you try Westerns website?
     
  6. shooter56

    shooter56 Member
    from ct
    Messages: 57

    I have not but I will look now. Thks

    I looked but found nothing.. but I found a harness diagram on the fisher site. I saw a configuration plug in the wiring diagram. I saw this on my truck but there is just a cover on it. Should I try to jump from the center to either side to check?
     
    Last edited: Nov 12, 2013
  7. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,926

    Well for doing some searching. It appears that a green iso is the one for gm tks. Now that's not confirmed by a dealer just what I have found in my searching
     
  8. shooter56

    shooter56 Member
    from ct
    Messages: 57

    I talked to a guy I know who has the same truck, he is going to check it today.
     
  9. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,926

    Ok. I know our Chevy at work has a green 4 port. The search on eBay revealed green label are gms but like I said I can't say 100% but I'm like 90% that you need a green label
     
  10. shooter56

    shooter56 Member
    from ct
    Messages: 57

    Turns out that I have the right module, 26400 white label. I guess the trouble is somewhere else.
     
  11. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,926

    So you might need to flip the headlight plug from A to B.
    I did find a flow chart on fishers website
     
  12. shooter56

    shooter56 Member
    from ct
    Messages: 57

    I saw that but the plugs are not marked A or B.

    I found the 11 pin connector positions

    1. black/white ps low beam
    2. black/orange ground
    3. white/yellow ps high beam
    5. blue/orange ps common
    6. black ds low beam
    7. black/orange ground
    8. gray left turn
    9. purple right turn
    10. brown parking lights
    11. light blue ds common

    ____7____8____9____10____11____
    |

    |_1___ 2____3____4_____5______6___/
    ****************|____| *************

    This is what I found on the fisher site
     
    Last edited: Nov 13, 2013
  13. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,926

    They should be. At the tk light wiring to.plow
     
  14. shooter56

    shooter56 Member
    from ct
    Messages: 57

    I looked at them and never saw that A/B on the connectors. but I will look again.:dizzy:
     
  15. shooter56

    shooter56 Member
    from ct
    Messages: 57

  16. shooter56

    shooter56 Member
    from ct
    Messages: 57

    I borrowed a green module #27781 from a friend all the trouble went away! So flipping the headlight connectors from A TO B did not work.

    So I just need that module.
     
  17. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,926

    Ok. I thought u said that the white label was acceptable for your tk?
     
  18. shooter56

    shooter56 Member
    from ct
    Messages: 57

    That is what I read on fisher site. And the guy I talked to at fisher said it should work. He also said to flip the headlight sockets from a to b.that did not work either so I called Mike and grabbed his green module. The proof in in the module. Everything works as it should. But I still need a green module.
     
  19. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,926

    Ok. I looked on eBay the other day and there were a few listed just fyi
     
  20. shooter56

    shooter56 Member
    from ct
    Messages: 57

    I just got a call from Fisher.. they said to use the configuration plug it will fix it. It did fix it.

    So this means that a 26400 4 port white does work in a 03 GM 2500 with the configuration plug from the center B to A
    (c b a) position headlight common negative.
     
    Last edited: Nov 14, 2013