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Fisher headlamp issue

Discussion in 'Truck & Equipment Repair' started by MULLOY, Nov 28, 2014.


    MULLOY Junior Member
    from MASS
    Messages: 1

    Hey guys, I just did a plow swap from '95 Chevy K1500 to a '99 GMC K1500. Its a Fisher MM-1,no ISO module, has a 2-relay harness for the lights. Both trucks have the HB-3 headlamps. Plow lights worked fine on the
    '95. Now with the same plow and wiring on the '99, all we have is high beams. Truck headlamps work normal without plow plugged in.
    Can I reconfigure the relay wiring to accommodate the '99 lights?
    Any input appreciated. Thanks, Mark Mulloy
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,745

    I'm thinking you need the 6 relay setup. There was just a thread on.this on.the western or Chevy forum Might wanna Ck there