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Truck light problem. and controller ?

Discussion in 'Boss Plows Discussion' started by diesellandscape, Nov 14, 2010.

  1. diesellandscape

    diesellandscape Member
    Messages: 79

    Hello.

    I just had my mechanic wire up one of our trucks...

    its a 99 f250 sd
    Whenever we are on truck lights, one low beam will work and then when high beams are on its oppsite sides but still only one.

    also, when the truck is on, and you turn controller on it should work correct? i think my controller went bad after sitting all year
     
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Poor connection(s) at the adapters or the relays or weak ground on the brown wire that MUST be directly on the negative battery terminal. Weak ground on the brown wire will cause both lighting issues and lack of controller power.