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Author Topic: 727 One Wire Neutral Safety Switch  (Read 4904 times)

Jason Medhurst

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727 One Wire Neutral Safety Switch
« on: September 14, 2009, 07:42:52 AM »

I am having a hard time finding a neutral safety switch with a single wire like the one I currently have.  I can only find the three wire one with a connector.  Can the three wire switch be wired so that it can work with my single wire?
It was a toss up wether this topic should be here or in electrical...
 
Thanks!
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Steve

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727 One Wire Neutral Safety Switch
« Reply #1 on: September 14, 2009, 08:17:15 AM »

You can use a 2 post. . .  Just be careful to use the neutral safety side and not the back up light.  You'll need to check it with a light in park.  It's not original, but it works the same.
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Jason Medhurst

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727 One Wire Neutral Safety Switch
« Reply #2 on: September 14, 2009, 08:45:55 AM »

Thanks! 
I am very bad when it comes to electrical, I need this to be very simple to understand.
 
Do you have a part# for the two post switch?  I know that the actual switch side on this inside might be different in some cases
See:  http://www.moparts.org/Tech/Archive/auto/5.html
 
That brings up a good point, I was told that the reverse light was controlled by a cam type switch actuated by the steering column.  Is this true?
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68 Newport Vert, 02 Chevy Duramax (421 RWHP), 05 Ford Excursion Powerstroke, 98 Jeep Wrangler, 95 Caddy Fleetwood LT1, 99 Honda Valkyrie, 97 Yamaha VMAX with Nitrous, 84 Honda CT70 trail bike,06 Rhino

Steve

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727 One Wire Neutral Safety Switch
« Reply #3 on: September 14, 2009, 09:34:43 AM »

What car is this again?  Some were.  But that still doesn't matter on the neutral safety.  It won't effect it.  You're only using one side.
 
The easy way to find out is to guess at a connector and try it.  If it starts in reverse, then switch it and visa versa.
 
What is this doing so we can make sure you're not just changing parts.  Neutral safety is not all that common. . .but for some reason, they sell allot of them. . . . LOL
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Leaburn Patey

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727 One Wire Neutral Safety Switch
« Reply #4 on: September 14, 2009, 04:13:47 PM »

I have a spare NORS  one wire switch still in a box.
CBarge2009-09-14 21:14:43
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Steve

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727 One Wire Neutral Safety Switch
« Reply #5 on: September 14, 2009, 04:54:23 PM »

I knew that but didn't want to speak for you Lea
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Jason Medhurst

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727 One Wire Neutral Safety Switch
« Reply #6 on: September 14, 2009, 05:24:09 PM »

Thanks Lea!
Email me at jasonmedhurst@yahoo.com
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68 Newport Vert, 02 Chevy Duramax (421 RWHP), 05 Ford Excursion Powerstroke, 98 Jeep Wrangler, 95 Caddy Fleetwood LT1, 99 Honda Valkyrie, 97 Yamaha VMAX with Nitrous, 84 Honda CT70 trail bike,06 Rhino

Dan Cluley

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727 One Wire Neutral Safety Switch
« Reply #7 on: September 15, 2009, 01:44:28 AM »

Just for future reference.  To use a 3 wire switch with the older setup, the wire from the starter relay should be connected to the middle prong on the 3 wire switch.
 
The outer two prongs are for the back up light circuit.  I assume it's arranged that way, so that it doesn't matter which way the plug goes onto the switch.
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Jason Medhurst

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727 One Wire Neutral Safety Switch
« Reply #8 on: September 15, 2009, 07:13:28 AM »

Thanks Lea, my email is jmedhurst@aztechcontrols.com
 
Let me know what it costs. 
 
Isn't the reverse lights switch a cam switch on the steering column?
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68 Newport Vert, 02 Chevy Duramax (421 RWHP), 05 Ford Excursion Powerstroke, 98 Jeep Wrangler, 95 Caddy Fleetwood LT1, 99 Honda Valkyrie, 97 Yamaha VMAX with Nitrous, 84 Honda CT70 trail bike,06 Rhino

Leaburn Patey

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727 One Wire Neutral Safety Switch
« Reply #9 on: September 15, 2009, 07:19:47 AM »

Quote from: Vick Ferrari
Thanks Lea, my email is jmedhurst@aztechcontrols.com
 
Let me know what it costs. 
 
Yes the reverse lights switch is on the column.
CBarge2009-09-15 12:22:32
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1968 Newport Custom project BOAB
1973 Satelitte wagon
1983 Dodge 400
2006 300C HEMI!!

Butch Houghton

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727 One Wire Neutral Safety Switch
« Reply #10 on: September 16, 2009, 06:54:08 AM »

You can't use a later 3-prong with a 68-back Valvebody without changing the "Rooster comb" on the VB.     Won't actuate correctly.

The comb is plastic made onto the shaft that goes through the case to the linkage,  with the vVB out you just pull the c-clip on top & slide it out,  replace with a 69-up version.   Only fun thing is the spring & ball for the detent  arm to watch,  don't wanna be chasing it all over the room.

Butch


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Leaburn Patey

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727 One Wire Neutral Safety Switch
« Reply #11 on: September 16, 2009, 03:31:54 PM »

[/QUOTE]
One of the reasons I have spares of the one wire switch.
And I am sending him one.
No need to hack or modify when the right schtuff is made available.
Besides they do go bad that often--just get old and leak .
Cheers.
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1968 Newport Custom project BOAB
1973 Satelitte wagon
1983 Dodge 400
2006 300C HEMI!!

Steve

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727 One Wire Neutral Safety Switch
« Reply #12 on: September 16, 2009, 03:50:16 PM »

[/QUOTE]
 
Oh wise one. . . .
 
I have done it several times with no problems.  The last one I did was the 59.  That's still hanging around.  I needed a back up light switch
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Jason Medhurst

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727 One Wire Neutral Safety Switch
« Reply #13 on: September 16, 2009, 07:05:50 PM »

Thanks for the input.  I am chasing a tranny leak, and this is the last point to change out.  I am surprised at how low the surface tension is for tranny fluid.  It can wick through anything!
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68 Newport Vert, 02 Chevy Duramax (421 RWHP), 05 Ford Excursion Powerstroke, 98 Jeep Wrangler, 95 Caddy Fleetwood LT1, 99 Honda Valkyrie, 97 Yamaha VMAX with Nitrous, 84 Honda CT70 trail bike,06 Rhino

Stan Paralikis

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727 One Wire Neutral Safety Switch
« Reply #14 on: September 17, 2009, 03:51:45 AM »

Quote from: Vick Ferrari
I am surprised at how low the surface tension is for tranny fluid.  It can wick through anything!
A 50/50 mix of tranny fluid and acetone is more effective than PB Blaster.
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