Re: {Chrysler 300} 1962 Astradome Electrical

Hi Matt did anyone write you back?

Speedometers usually have a wire that goes through the back of the housing and has a red plastic terminal that plugs into the gauge (oil I think) with the extra blade for EL lights… I can double check that…

Someone else can chime in about the high pitched hum at the switch but my guess is that is somewhat common. Maybe the switch could use a little cleaning or a shot of DeOxit5.

Also don’t forget your ground wire! In fact install an extra as John Grady has suggested in the past.

D&K

Sent from my iPhone

On Jul 21, 2025, at 00:07, 'Matt Allyn' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:

Reinstalled my fixed up Astradome, Gauges & Speedometer.
All is working A-OK, except….
All illuminates bright & lovely except the Speedometer face itself.
Even the Odometer lights up.
Maybe I missed one of the white wires with red end that plugs in underneath somewhere?

There is an audible whine.
Sounds like it is coming from the headlight switch.
When I turn its rheostat to the brightest position, it whines.
When I turn the rheostat to the dimmest position, the whine goes away.
I need to change out the Headlight Switch?
Or is that an indication of the Astradome Power Pack?
(Though it really does sound like it comes from the Headlight Switch versus under the Kick Panel / Power Pack location)

Thanks!

Matt Allyn

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