Voltage Regulator Wiring

[Kjart]

I am looking to put a Wilson voltage regulator on a 1964 MF35 gas. I have a wiring diagram for the tractor but the regulator in not original and I am unsure about the terminal identification on the regulator. It is a 4 terminal regulator with F-2-3-4 marked on the housing. I assume F is the field terminal but need to know what the others are. Any help is greatly appreciated.

 

[rvirgil_KS]

F-2-3-4 terminal regulator would likely be for a Delco 10DN externally regulated alternator. If that is what you had it should wire like the old one.

If you have a 10DN, you would likely do yourself a favor by replacing it and the external regulator with a Delco 10SI Internal regulated alternator. They were common on early 1980's GM vehicles

 

[wore out]

"Wilson" has nothing to do with it, they are simply a rebuilder of stuff made by other companies.

From your brief description you give it sounds to me like you have a Delco 10DN alternator.

<img src = "https://i.imgur.com/H73y3rl.jpg">

Does it look like this?

If so, for the most simple circuit, connect regulator "F" to alternator "F". Connect constant battery power to regulator terminal "3". Connect "switched power" that goes on and off with ignition switch to regulator terminal "4". Regulator terminal "2" is not used.

<img src = "https://i.imgur.com/Rn5tVfZ.jpg">

 

[Kjart]

(quoted from post at 05:59:59 08/23/20) I am looking to put a Wilson voltage regulator on a 1964 MF35 gas. I have a wiring diagram for the tractor but the regulator in not original and I am unsure about the terminal identification on the regulator. It is a 4 terminal regulator with F-2-3-4 marked on the housing. I assume F is the field terminal but need to know what the others are. Any help is greatly appreciated.

I should add the tractor has a generator as opposed to an alternator.

 

[Kjart]

How complicated is it to convert from the generator to an internally regulated alternator? The tractor has a positive ground.

 

[wore out]

If it is in fact a generator you have the WRONG regulator!

I am normally not a big fan of "one-wire" alternators, but if you don't want to get heavily involved in understanding the electrical system and how to make a conversion to negative ground, etc., positive ground "one-wire" alternators are readily available, and all that is need to install them is to run a 10 GA. wire from the alternator's output stud to the battery cable connection on the starter switch or solenoid.

 

[John T]

Conversion, especially if you choose a so called One Wire internal regulated Alternator, is easy peasey once you figure out mounting and
belting HOWEVER most alternators are for Negative ground which isn't a hard tractor conversion, simply connect the battery at Neg ground
and if it has a coil ignition those leads need swapped and same if it had an ammeter. The VR you described sounds more like for an
Alternator ???????

To wire a One Wire Alternator its big main charging output stud is what charges the battery often via a wire to the battery POS or more
often where the big battery cable attaches to a starter switch/solenoid INPUT which should be the same as wherever the BAT terminal on an
old Voltage Regulator was wired.

Many prefer a so called Three Wire alternator as it can excite and start charging even at low RPM, unlike some One Wires that need high
RPM to start charging.

DONT WIRE THE ALTERNATOR AT THE WRONG POLARITY

John T