Re: {Chrysler 300} 1962 Astradome Electrical

Its the wires WITHIN the Speedometer head.

2 wires feed the Odometer.

1 wire feeds the Speedometer Face

1 wire feeds the Pointer Needle

I need to pull the Speedometer out…..

Carefully push the feed wire into the Speedo (via its rubber grommet).

Carefully unwrap the 63 year old electrical wrap tape.

Resolder the wires, re-wrap them, re-grommet them, reinstall the world.

Yay!

Oh…He said the whine IS from the Power Pack & should go away once the Speedo & Pointer light up….

Thus helping pull more power FROM the power pack.

But I will most likely pull the Power Pack & bench test the illumination before I reassemble it all.

Thanks to you both for your thoughts & info!!

Matt Allyn

On Jul 21, 2025, at 12:42 PM, John Grady <jkg@xxxxxxxxxxxxxxxxx> wrote:

hi all his lights are on , no problem with blades on gauges .all work
He has somehow not gotten the white AC power wire to main face of speedo , the “numbers “ EL panel .( jump to other white wire in there or? factory harness not on right? )
Maybe you have a dash out ? i forget where it is

On Jul 21, 2025, at 2:52 PM, 'dave mason' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:

To avoid confusion the extra EL blade is on the Amp gauge, for 61-62. It’s on the oil gauge for 1960.

D&K

Sent from my iPhone

On Jul 21, 2025, at 14:45, 'dave mason' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:

Matt,

Looks like the gauge with the extra EL blade is the Amp gauge.

Sent from my iPhone

On Jul 21, 2025, at 14:41, dave mason <forwardlook300@xxxxxxxxx> wrote:

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….
<IMG_0499.jpeg>
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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