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IH 444 Ballast Resistor?

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I've searched and read about this, but still unsure where the ballast resistor is on this tractor.  I've seen it said that it's actually resistance wire between the ignition switch and the coil.  Is it not this resistor near the regulator (pic attached)???

And if it is resistance wire, is it before the solenoid terminals, or between the sol terminal and the coil?

Thanks,
Keith

unnamed.jpg

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The resistor shown is for the charging system. The resistance runs from the connector shown at the bottom right of your picture to the starter solenoid. The small terminal on the engine side of the solenoid has two wires attached to it. One of these is the resistance wire and the other goes to the coil.

The resistance wire has broken several times on my 2444. I finally just ran a new copper wire to a resistor mounted on the front side of the fuel tank heat shield near the manifold. I used NAPA # ICR13 for the resistor.

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Thank you Owen.  I think I saw your name on some other forum posts I was reading, but I believe there were conflicting answers.  This puts it to rest for me. 

A couple of years ago when I was trying to diagnose a no-spark condition, I was wary of the condition of the wire from the solenoid terminal to the coil + terminal, so I ran another wire in parallel with that to make sure I was getting full voltage to the coil. Now, based on what you're saying, that new wire did NOT bypass the resistance wire. So I still have that in the circuit.

Last year I put in the Pertronix Ignitor I, and also their flamethrower coil. That coil is 3.0 ohms on the primary, so I don't think the ballast resistor/wire is needed. Guess now I need to decide whether I should bypass that wire to remove the resistance.

BTW, Zumbrota is one of the nicer areas in Minnesota.  We've done several group motorcycle rides down in that area (as well as Western WI); it's great for riding.

Keith

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On 5/30/2018 at 2:18 PM, Owen Aaland said:

The resistance runs from the connector shown at the bottom right of your picture to the starter solenoid. The small terminal on the engine side of the solenoid has two wires attached to it. One of these is the resistance wire and the other goes to the coil.

Hey Owen,  not sure what the chances are that you'll see this on a Sunday, but....

I'm back to the 444 today, and I disconnected this wire at the solenoid, and am probing the wires back at the connector to verify which one is the resistance wire. I didn't expect so many to show continuity, but maybe some of these are connected either at the solenoid or the alternator? Does 33 ohms sound like what you'd expect for the resistance wire? 

If that 33 ohms is the resistance wire, that would be good to know. Otherwise I may need to disconnect a bunch of wires to absolute verify which one is it.

Thanks,
Keith

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If I remember correctly the resistance wire is crimped into the connector along with another wire. The other wire is a copper wire that runs to the fuel shut off solenoid on the carburetor and then across the engine to the fuel pump. The wire in the resistance wire is silver colored.

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1 hour ago, Owen Aaland said:

If I remember correctly the resistance wire is crimped into the connector along with another wire. The other wire is a copper wire that runs to the fuel shut off solenoid on the carburetor and then across the engine to the fuel pump. The wire in the resistance wire is silver colored.

Well, I ended up basically trusting the wiring diagram.  That shows there is only one terminal on the connector that has two wires going to it. One going to the voltage regulator, and one going to the solenoid. And on my tractor there is just the one terminal with two wires, and one of those is running to the right-side solenoid terminal. So it sounds like that must be it. The resistance on that wire is about 1.5 ohm, which is probably about right. (33 ohm not a likely value for a ballast resistor).

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The resistance on that wire is about 1.5 ohm, which is probably about right.

Messing around with old cars, I agree with you that ballast resistor is just a few ohms.  We would carefully save single digit, ceramic resistors for just this purpose.

I am rewiring my IH 444 to get more than just the ignition and starter to work, the above sounds like I should consider discrete, checkable ballast resistor while I am tearing into things.

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