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2001 F350 9' Straight blade headlights

Discussion in 'Fisher Engineering Discussion' started by RoseMan806, Jan 15, 2016.

  1. RoseMan806

    RoseMan806 Member
    Messages: 96

    Truck has the two plug harness. Tested fine two months ago. Hooked up plow for first storm and low beam plow lights did not come on but the high beams worked. Parking lights worked fine. After inspecting the relays we have now lost plow high beams as well.

    When plugging in the plow connectors does it ground the relays to switch them over?
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 11,392

    Yes it does, through the blk/org wire. Via the big 2 pin connector at the grill.
  3. Philbilly2

    Philbilly2 PlowSite Veteran
    Messages: 3,793

    To elaborate a bit, your ground on your relays would be threw your #5 pin on your 9 or 12 pin plug, out to plow, then back to truck threw 2 plug