Re: [AMC-list] GM 3wire Alt hookup. (was Re: AMC-list Digest, Vol 24, Issue 24)

[Jim Blair <carnuck@xxxxxxxxxxx>]

If you have the light sensor wire hooked just to switched power and not through enough resistance, the feedback can be enough to keep the coil operating. I ran into that several times over the years. That's also why the heater fan is on the accessory side of the ignition. Otherwise when the car is shut off, the fan turns into a temporary generator and keeps the car running for a bit. 

From: tom jennings 
To: "AMC, Rambler, Nash, Jeep and family" 
Cc: fljab@xxxxxxxxxxx, amc-list@xxxxxxxxxxxx, Jim Blair

Subject: Re: [AMC-list] GM 3wire Alt hookup. (was Re: AMC-list Digest,
Vol 24, Issue 24)
Message-ID:

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On Tue, Mar 15, 2011 at 10:25, Jim Blair  wrote:

> It's really easy. Main wire and sensor wire go to battery . Other wire
> goes to light (preferably with a 10 ohm resistor, but not necessary) or with
> a switched power source, but not on the same circuit as the ignition (unless
> you add a diode or the car won't shut off. Been there, scratched my head
> till I figured it out)
>


? If there is no power to the ignition, the car will stop running,
regardless of alt wiring.

I've got a GM 3-wire in my 63 Classic, and a Mitsu equiv. in my 63 American,
using the stock dash lamp wiring. Works fine as-is.
 		 	   		  
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