Coil - Mag - Wire - where does it go?

gdtractor

Member
Yep .. it's me again .. I can't figure out where A WIRE goes .. and several others .. ?
I am not sure if this is positive or negative ground but it does have an electric starter on it .. it didn't have a battery in it when I got it .. so not sure of the voltage 6 or 12

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Any input would be appreciated .. it is a 1941 C with a B front end ..
I have the clean like new head back on .. and have the head torqued and valves are smooth, clean, and free as can be now . Engine turns nicely now .

Thanks a lot

Gary
 
It looks like you need a wiring harness and a diagram.

As I recall, there were originally four wires running from the front of the tractor back to the instrument panel.

Wire from magneto back to kill switch(or from coil back to key switch).

Wire from cut out back to ammeter.

Wire from gen. field term. back to light/hi/lo charge switch.

Wire from insulated stud on radiator shroud back to light switch.
 
See if these will help!


Wireingstarterandgenerator-vi.jpg


Wireingharnesandlightdigram-vi.jpg


WireingDiagram3-vi.jpg
 
YEs .. it does help !! it appears that it is a positive ground for sure! and the wire going to mag is the - wire (- side of battery) from the switch or front of tractor ..
The generator seems to have the ground (positive) running to it and/but grounds itself to where it is bolted on ..

Thanks so much . .

Gary
 
Thx Bob ..... the manual ... definitely helps !!

Thanks for replying to my post .. it is making sense now !

It appears to have a positive ground circuit ..

Gary
 
So - while trying to figure this out .. with the diagram and so forth ..
I need the battery for lights and the starter primarily because this has a mag on it ..
(so until I get the wires figured out for the generator - if the battery is charged to turn the starter - if points etc is okay in the mag it should run .. in DAYLIGHT . :)

Gary
 
Dick ..
as I have studied this .. I notice on the tractor's mag that the red wire runs to the "kill metal" on the mag .

The wire is probably not to POWER the coil is it? But rather to ground out the mag as a kill switch from the tractor seat ..

Whatcha think?

I wrote this above
"So - while trying to figure this out .. with the diagram and so forth ..
I need the battery for lights and the starter primarily because this has a mag on it ..
(so until I get the wires figured out for the generator - if the battery is charged to turn the starter - if points etc is okay in the mag it should run .. in DAYLIGHT . :)

Gary"
 
As I think you have figured out, DO NOT feed battery power into the mag. It makes it's own "power" and the terminal is just to "kill" the spark to stop the engine, by shorting the terminal to ground.

Unless you want to "kill" it.
 

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