Help - electrical problem

[Deleted User]
[Deleted User]
edited November -1 in HUDSON
I am hooking up the under-dash wires on my 54 Special. Everything works fine EXCEPT for the dam oil pressure light. The only way it will come on is if I touch the bulb holder with a ground wire. The ONLY way. I have tried grounding the dash area around it, running a ground wire to the dash studs, everything. It simply won't work. Where the bulb holder snaps into the dash has been cleaned thoroughly. It's neighbor the amp gauge light works fine. What is going on here? Are the Hudson Gods punishing me for some past transgression?

Thanks for any words of wisdom you can provide.

Doug

Comments

  • hornet53
    hornet53 Senior Contributor
    Maybe the bulb isn't making good contact with the socket once it's in position?
    Electrical tape over outside of the light?

    Hey, if the light ain't on, the pressure must be good, right?
  • Geoff
    Geoff Senior Contributor
    The oil light is supplied with voltage from the ignition switch, and grounded through the pressure switch in the engine block, not the bulb holder. Have you tried running a wire from the switch contact to ground. It sounds to me like the switch is faulty.
  • [Deleted User]
    [Deleted User]
    I had that happen 1 time on a mopar.Some one had wraped the sender switch with teflon?tape to keep it from leaking and it (the tape)prevented the switch from grounding to the block.
  • [Deleted User]
    [Deleted User]
    Chipmaker, that may be the problem. I did wrap the fittings on the sender unit with teflon tape. Never occurred to me that would interfer with the grounding. Thanks for the feedback.

    Doug
  • SuperDave
    SuperDave Senior Contributor
    If it's like the earlier models, there are two wires that go to the socket. 6 volts from the ignition switch and the other one goes to the oil pressure switch on the engine. So there is voltage present all the time the ignition is on and the ground is suppied by the switch. Have fun, that 54 is a Bxxxh to work under the dash..
  • Geoff
    Geoff Senior Contributor
    Teflon tape is for plumbing, not automotive use. It softens when exposed to gasoline or oil. Throw it away.
  • [Deleted User]
    [Deleted User]
    Thanks to everyone who responded. The problem turned out to be a faulty switch. Since it was new new out of the box I never suspected that was the problem. Goes to show ya.

    Thanks again,
    Doug
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