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can use some help here on my lights

Discussion in 'Ford Trucks' started by plowzilla, Jan 31, 2011.

  1. plowzilla

    plowzilla Senior Member
    Messages: 290

    My 1990 f350 just burned out two light switches. The headlights work but not the parking/ running lights. One of the wires going into the switch gets really hot. Any one have a clue on what it could be. P.S. I am running a new ultra mount with 2 plug harness. Thank you in advance.
  2. mwalsh9152

    mwalsh9152 Senior Member
    Messages: 434

    do you have a lot of running lights on your truck? This was a pretty common problem with the older body style Fords. The best fix was to locate the wire for the running lights under the dash and wire it into a relay. I think they actually had a circuit in the under the hood relay box for doing this, it just had to be hooked up
  3. plowzilla

    plowzilla Senior Member
    Messages: 290

    yeah, found the problem. The wires going to the license plate were worn causing the problem. Thats a good idea to add a relay, thank you