Newbie Dumb question.. 12v regulator needed?

xfratboy · Aug 11, 2021

If I am removing a generator in my f40 and installing a one wire alternator.... do I still need the 12V regulator? The kit I bought has a 3ohm on resistor but no instructions stating to remove the 12v regulator (square black box where all the wires are going into).

Jim.ME · Aug 11, 2021

Remove the regulator, it is not needed.

rvirgil_KS · Aug 12, 2021

As Jim stated remove the generator regulator. Your alternator has a built in regulator.

The resistor has nothing to do with the alternator or regulator. It is to limit current through the coil when you change to 12 volts on a 6 volt system. The resistor would go between switch and coil if using the original 6 volt coil. You could change it to a direct 12 volt no resistor required coil and eliminate the resistor.

If you decide to use the supplied resistor with original coil check the resistance across the resistor. I have seen several kit resistors with much too high a resistance and result in hard starting. The resistance of the coil should nearly equal the resistance across the + and - terminals of the coil, or about 1 1/2 ohms

Newbie Dumb question.. 12v regulator needed?

xfratboy

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Jim.ME

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rvirgil_KS

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