Ignition switch

Jul 15, 2019 8:44 AM - 230 Views Create A New Thread

Tech Tips

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Knoxville, TN

Replacing old ignition that does not function properly.
Put a new Peterson Mfg 4 stud ignition switch on my '29 chevy streetrod to replace one going bad. Does nothing after installed, no grunts, no sounds ,nothing. Put the old back on and at least gives some sound, clicking. Put the new one back on and still nothing. Attached the wires on the new as they were on the old, even tagged them with tape to be sure of correct installation. Any ideas as to what I have done or need to do.


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  • jimmothershead
    Jul 17, 2019 at 8:10 AM

  • RRickerman
    You never waste our time. Street rodders are allways happy to help.
    Glad you it is fixed.
    Jim, School of Hot Rod Hard Knocks since 1957

  • 32 Dodge
    Jul 17, 2019 at 5:08 AM

  • Don't be sorry,
    This is what we are here for!
    Glad you found the problem.

  • rrickerman
    Jul 17, 2019 at 3:08 AM

  • Talked to an engineer at Peterson Mfg and was determined I indeed had a wire incorrectly connected and had me switch it to the ACC stud and appears to be working correctly at this time.
    Sorry for taking everyone's time on a problem I created. Much appreciate all the input.

  • will547
    Jul 16, 2019 at 5:05 PM

  • Any Update??

  • rrickerman
    Jul 15, 2019 at 5:07 PM

  • Have checked the switches for continuity and they are fine. All three have the same studs, bat, ign, acc and st. have connected the two new ones as the old one. The old one will still turn starter, on occasion, but the two new ones do nothing. Do not even make a grunt or click, just like they are not hooked up. Have switched back and forth between the old and new several times.
    Will touch the bat and st together to see if there is any action.

  • 32 Dodge
    Jul 15, 2019 at 5:00 PM

  • Funny thing,
    I'm outside installing my new Ron Francis pull ignition switch right now. My old ignition switch went bad last week, after 43 years of use!

    Trace those wires, I notice my wires are a different color than what the instructions say they should be. Take your time.

  • GeneF
    Jul 15, 2019 at 3:55 PM

  • I'd say it is highly odd to have 2 new ones bad. Take the switch out, and test it's function (momomentary continuiyty, etc) with and ohm meter. Easier with a helper. From there, don't assume the orientation from your old stuff to your new is the same. One thing for sure, the only thing that makes it spin is the 12V batt wire and the ST wire. What happens when you touch them without the switch? If nothing, then the wire went bad on ya. Some GMs have fuseable links that either burn up, of CAN get internally corroded.

  • will547
    Jul 15, 2019 at 9:42 AM

  • Next step find the hot wire and connect it to the start wire running to the solenoid. See what the stater does then. If the starter engages and the engine turns over then there is a switch issue or the wires are not in the right location. Also check the voltage at the power wire to the switch.

  • rrickerman
    Jul 15, 2019 at 9:04 AM

  • This is the second Peterson Mfg ignition switch I have tried. Neither would do a thing. They both are the same, labeled the same, as the defective switch. Even tagged the wires before removing so I would be sure to put on correct studs of the new switch. In fact the keys are all interchangeable.

  • will547
    Jul 15, 2019 at 8:53 AM

  • I would say the new switch is bad or the location where the wires go is not the same. Are all the studs on the new switch marked the same as the old switch?

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