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Thread: Dash lights

  1. #1
    Join Date
    Mar 2004
    Posts
    115

    Default Dash lights

    My dash lights and gauges stop working when you turn on the headlamps. Hit a bump and they start to work and then out again. I have taken this thing apart 2 times and can not find anything loose. Ideas?
    Lonnie Diers Extreme Automatics
    1994 Chev 2500HD 532,119 miles 21,300 GCW towing machine.
    Original engine, injectors, replaced head gasket 1 injection pump, 3 turbos

    Ready to install ( was ready now changing to 18.1 pistons)
    New engine 4 bolt splayed steel caps
    Lightly ported heads
    Polished intake port matched
    HX35W Turbo
    Intercooler (very efficient tube fin design)
    Marine Injectors hi pop
    Cooling upgrades
    3" DP
    4"exhaust
    remote mount PMD cooler
    Fresh air intake (in the making)
    Gears ???? have not decided looks like 3.42
    250HP at the wheels or bust (maybe both)

  2. #2
    Join Date
    May 2005
    Location
    SE Wisconsin
    Posts
    488

    Default

    Bad headlight switch or connector. Mine does the same thing. I now have it hanging out so I can push the connector tighter to the switch when the lights won't come on.
    1993 K3500 - Peninsular 18:1 engine, marine injectors, high capacity cooling, AL Core Radiator, 3" DP and 4" exhaust, ISSPRO Gauges, Girdle, AMSOIL Dual Oil Filter System, 1997 Air Filter(trashed the K&N), 395K on Body, 165k on engine.
    1997 GMC Savana - 6.5 TD
    1966 CJ5 - V6 Gas - highly modified
    1967 Jeepster - Stock
    1986 Jeep CJ7 - Stock
    1993 Grand Cherokee - 6.2 diesel
    2007 Grand Cherokee - 3.0 diesel

  3. #3
    Join Date
    Jan 2001
    Location
    New Hampshire - Live Free or Die
    Posts
    6,059

    Default

    Maybe a bad ground in the instrument cluster - Energizing the lights lifts the ground up enough to keep the gauges from working...
    The Constitution needs to be re-read, not re-written!

    If you can't handle Dr. Seuss, how will you handle real life?

    Current oil burners: MB GLK250 BlueTEC, John Deere X758
    New ride: MB GLS450 - most stately
    Gone but not forgotten: '87 F350 7.3, '93 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6, '90 MB 350SDL, Kubota 7510

  4. #4
    Join Date
    Mar 2004
    Posts
    115

    Default

    I am going to try a new headlight switch tomorrow. I have had the dash apart many times.
    Lonnie Diers Extreme Automatics
    1994 Chev 2500HD 532,119 miles 21,300 GCW towing machine.
    Original engine, injectors, replaced head gasket 1 injection pump, 3 turbos

    Ready to install ( was ready now changing to 18.1 pistons)
    New engine 4 bolt splayed steel caps
    Lightly ported heads
    Polished intake port matched
    HX35W Turbo
    Intercooler (very efficient tube fin design)
    Marine Injectors hi pop
    Cooling upgrades
    3" DP
    4"exhaust
    remote mount PMD cooler
    Fresh air intake (in the making)
    Gears ???? have not decided looks like 3.42
    250HP at the wheels or bust (maybe both)

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