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Lighting/Electrical Issues

Discussion in 'Chevy Trucks' started by MarkEagleUSA, Aug 19, 2014.

  1. MarkEagleUSA

    MarkEagleUSA Senior Member
    Messages: 335

    Seems my 97 K2500 has developed some issues with lighting. The only bulb that comes on in the rears is the backup lamp. Turn on parking lights, backup lamp comes on. Turn signals blink rapidly if the lights are on but it's the backup lamps that illuminate. Brake lights same thing.

    I disconnected the rear lights completely and I still get the rapid blink, etc. All the front bulbs appear fine. At first I thought it might be a bad bulb but everything seems fine. I'm now thinking maybe a bad switch, but which one?

    It appears that something is backfeeding through the ground circuit since the backup lamps don't share anything else with the rest of the lights.

    Can anyone shed any light on this? ;)
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 11,392

    Ck the ground. Sounds like a rusty bad connection to me
  3. 2006Sierra1500

    2006Sierra1500 PlowSite.com Addict
    Messages: 1,758

    Def a ground
  4. MarkEagleUSA

    MarkEagleUSA Senior Member
    Messages: 335

    Exactly what the problem was. The 2 ground wires at the rear of the chassis were attached to a bracket that rotted off. A couple of new ring terminals and a 5/16 bolt and I'm back in business.
  5. dieselss

    dieselss PlowSite Fanatic
    Messages: 11,392

    I would run a gnd from the batt straight back to the lights