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Automatic Trans.

Neutral Safety Switches

John posted this info and pics on the Q&A board.
THX John

John Kunkel
Moparts Member
Posts: 2200
From: Rio Linda, CA, USA
Registered: Nov 1999
posted 06-16-2002 04:20 PM
Here's a pic of the single wire N/S switches. The one on the right was used on all pushbutton transmissions from '55-'64 and has an all metal contact button.
The one on the left was used on the '64 console shift and all '65-'68. The metal contact is surrounded by plastic.

The four switches used in the TF. The two at right are interchangeable if the proper wire connector is used.

Here are the internal levers used with the various switches.

The 3 pin switches are for the later model (68 and later) cars and trucks.

The 2 outter pins are for the back up lights and the center pin is for the safety switch.

There is a cupped rubber covered metal gasket that seals the switch, no O ring. The P/N is 2408123.


big john
Moparts Member
Posts: 276
From: Northern New Jersey
Registered: Feb 2001
posted 04-10-2002 12:23 AM

I need the part # for the neutral safety switch WIRE HARNESS for 72 Duster w/727. After taking a ride and noticed the headlights blinking on and off. I found that the plug had come off the trans. and burned on the exhaust. I hope it is just the harness and not the alternator/regulator. Is this a dealer item or aftermaket vendor? Thanks in advance.. John

Moparts Member
Posts: 617
From: Rochester Hills, MI
Registered: Feb 2001
posted 04-10-2002 01:25 AM

Original P/N 21-113-24 for switch.

Moparts Member
Posts: 2948
From: Orange, CA. USA
Registered: Dec 2000
posted 04-10-2002 02:09 AM

I think Bill Evans makes those.
Bill & Rose Evans 814-864-2622

Moparts Member
Posts: 1544
From: Censored, MN
Registered: Mar 2000
posted 04-10-2002 06:22 AM

I can't remember the # for the connector with pigtail, but, you will get sticker shock when you price it. I will post it when I get home if no one else does. I think it's like $25-$30...I'm no electrical genius, but I'm sure the center is neutral ground, and the two outers are backup light grounds.

John Russo
Moparts Member
Posts: 1837
From: Portsmouth, VA, USA
Registered: Nov 1999
posted 04-10-2002 06:51 AM

Scroll down to see wiring harness/plug.

P/N 2926502, $16.19



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