Rewiring a 2N - Dell and others??

It currently uses a (new) 3-position switch, and an alternator with a main wire lead in and a plastic plug with 2 wires out.

Here is what I would like to do:

I don"t trust any of the existing wiring and would like to replace it all. Can any of you provide me with the SIMPLEST way to wire with the 12-volt conversion and replace all of the stock stuff with new? I"m not a mechanical idiot but I"m not a mechanic either..I recognize my limitation. I can follow directions pretty decent though!

Does someone have a list of the parts and part numbers as well as perhaps a diagram of the easiest way to do this? I"d really appreciate it and I can settle these issues once and for all!

Thanks,

James

1. Charging circuit: Its just a wire running from the large post on back of the alternator to the "common connection" point on the terminal board. From that point, run another wire to one side of the ampmeter and from the other side of the ampmeter, run a wire to the battery side of the starter switch. The large battery cable takes this charge up to the battery. (one color)

2. Starter circuit: This is the large wire that runs from the other side of the starter switch down to the starter. The starter is self grounding and needs no other wires. (Make this a different color)

3. Ignition circuit: Run a wire from the "common connection" point of the terminal block to one side of the ignition switch (probably marked bat. From the other side of the ignition switch (probably marked ign), run a wire to one side of the ballast resister. From the other side of the ballast resister, run a wire to the coil. (another color)
4. Light circuit: Run a wire from the "common connection point" on the terminal block either side of the light switch. Run another wire from the other side of the light switch to the headlights. Since these are internally grounded, no other wires are needed. (4th color)

Now because you have the additional "excitation" circuit back to the alternator, run a wire from the ballast resister side of the ignition switch to either a marker lamp or diode. From the other side of the (markerlamp), run a wire to plug P1. Run a short jumper wire from P2 to the large post on back of the alternator.This is a part of the charging circuit and should be the same color as the charging circuit.
Hope this helps..JMHO...Ron

Unless it's hiding under something I'll be darned if I can find it..... anybody have a location for me to look or a pic to show me?

Thanks,

James

I don't have pix readily available, but Bob's pic of the alternator above is the best I've seen showing the P1, P2 and the diode setup.

If you look closely you can see the "1" and "2" below the white plug in the pic - that's P1 and P2...

The connections back at the tractor dash are, with my very limited experience with this sort of thing, a little more confusing.

I'll try and get a pic of it all tonight, maybe that'll help.

Cheers,
Paul

Hook the charge stud on the alternator to where the bat contact would have been on the cutout relay.. or the VR. Now.. #2 on the alt loops down to charge stud. #1 on the alt goes to an isolated accy lug ont he start switch.. otherwise wire as per diagram. Keep any resistors you have, in line with the coil.

Might want to start with a new cheap repro wire harness.. 15$ from tsc.. etc..

Any reason you are not using the tranny interlocked thumb starter switch?

Soundguy

I am wanting to replace all of the resistors etc that need to be as well as I have no confidence in what is there due to age and deterioration.

Thanks,

James

This how the alternator was designed, and not using one of the three ways to prevent current from backfeeding from the #1 terminal on the alternator back to the ignition switch can cause internal alternator damage to the diode trio and/or voltage regulator under certain conditions. (Even if the ignition switch's "ACCY" terminal is used.)

What is very different is that I have one wire going back somewhere from the "nut" connection on the alternator and both wires from the plastic plug also to back somewhere in the wiring....not sure where but it sure doesn't look like your photo.

I really think this was a hack job at best!!

The nseries.com and myoldfords.com websites appear to no longer be functioning.

Thankfully their content, and that of 55 billion other webpages, lives on courtesy of the Internet Wayback Machine.

Scroll down the page to the diagram labelled "12 Volt Conversion."

This is the same diagram I used to recently rewire my '42 2N, and she's workin' like a charm.

Cheers,
Paul

• Wayback Machine - 2N 12 volt conversion diagram

You have any pics of this? I get some of it but the stuff on the terminal block and P1 & P2 are a bit confusing to me as I'm not sure exactly what I'm looking at.....sheesh...sorry.

James