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Dome Light Wiring

Discussion in 'The Hokey Ass Message Board' started by blown240, Jul 6, 2010.

  1. blown240
    Joined: Aug 2, 2005
    Posts: 1,654

    blown240
    Member
    from So-cal

    Seems to me that in order to get both door jam switches and the switch at the dome light to work correctly, the switches need to be on the ground side of the circuit, with power going directly to the bulb from a constant power source. Is that right?

    Or do you use the door jam switches to give power and the switch at the dome light to give ground. That would make the dome switch a kill switch for the light.

    And why do dome lights always short out? On my 51 Chevy and my buddies 54 Chevy the dome lights sizzle. I am going to totally rewire mine...

    Thanks!
     
  2. mj40's
    Joined: Dec 11, 2008
    Posts: 3,300

    mj40's
    Member

    Most one wire door jam switches are ground swithes.
     
  3. Da Tinman
    Joined: Dec 29, 2005
    Posts: 4,226

    Da Tinman
    Member

    yep. all switches ground, power to the lights only. Finished one today.
     
  4. flathead fred
    Joined: Jul 18, 2006
    Posts: 298

    flathead fred
    Member

    furthermore, if you are using original dome lights they had the power switched, if you have installed a new light switch you will need to throw in a relay to reverse polarity to the dome light. That way the ground switched jam switches will flip the power for the dome.
     

  5. Da Tinman
    Joined: Dec 29, 2005
    Posts: 4,226

    Da Tinman
    Member

    Huh?
     
  6. Yep, the dome light switch grounds out to bring the light on.
    You can double check that the right kind of switch is in your Jambs, it only has one wiring terminal.
     

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