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One headlight is REALLY dim! 07 Western V-plow

Discussion in 'Truck & Equipment Repair' started by aspenplow, Dec 12, 2008.

  1. aspenplow

    aspenplow Member
    Messages: 41

    I have an 07 Western MVP V-plow on my chevy 3/4 ton. I hooked everything back up after the summer and now one headlight is really dim! I can tell that both filaments are burning even when the low beams are on. So far I have checked the wires, cleaned the connectors, and tried a new bulb. Any suggestions? It has the isolation module if that matters.
  2. no lead

    no lead PlowSite.com Addict
    Messages: 1,308

    bad ground. black-orange at motor ground and at batt negative.
  3. aspenplow

    aspenplow Member
    Messages: 41

    Check the connection on black/orange wire..everything ok.. ran a jumper wire to another ground to double check and still nothing..the one headlight that works functions great! The other one still really dim. The amber running light bulb is even brighter than the headlight bulb!
  4. russ130

    russ130 Senior Member
    Messages: 204

    Could be a bad relay too