[AT] A-C WC battery

[Dick Day]

Well... thanks to all of you.  The Alternator does have just one wire, there 
is a resistor on the coil and the battery cable that runs to the starter 
switch has a piece of red tape on it at the battery terminal, so I'm sure 
this is a 12-volt negative ground.  The distributor cap looks factory, so I 
don't think this one ever had a mag.

Thanks again,

Dick

-----Original Message----- 
From: charlie hill
Sent: Sunday, August 07, 2011 10:38 AM
To: Antique tractor email discussion group
Subject: Re: [AT] A-C WC battery

Mike you make another good point that I almost missed.  If it's a WC it is
most likely a MAG engine unless it's been changed out.
I'm no expert on MAGS so I'll leave that alone.

Charlie

-----Original Message----- 
From: charlie hill
Sent: Sunday, August 07, 2011 11:09 AM
To: Antique tractor email discussion group
Subject: Re: [AT] A-C WC battery

Thanks Mike,   I forgot about those coil polarity issues.  It will run with
the wires backwards but not without some issues and you can run without a
ballast resistor on the hot wire to the coil but you'll go through a lot of
sets of points.

Charlie

-----Original Message----- 
From: Mike Sloane
Sent: Sunday, August 07, 2011 6:45 AM
To: Antique tractor email discussion group
Subject: Re: [AT] A-C WC battery

I agree with Charlie Hill's comments. Also check the ignition coil
(unless it is a mag engine). If the job was done properly, on a negative
ground system, the wire coming from the ignition switch should go to the
"+" terminal on the coil. Unless the coil was changed out, there should
be a "ballast" resistor wired between the ignition switch and the coil
to drop the voltage. Otherwise, you will burn out the coil.

I am unaware of any standard alternators that were other than 12 volt
negative ground, and few farmers would go to the expense of using a
specially modified alternator.

Mike

On 8/6/2011 9:53 PM, Dick Day wrote:
> I've had a WC sitting in the back for a few years and decided to start
> tinkering with it. I got it from the original owner. His son converted it
> to
> an alternator. The battery was gone when it got it.  How can I tell if
> it's
> 6 or 12 volt now and whether it's negative or positive ground?
>
> Thanks
>
> Dick
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