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My dad and I are replacing the engine in a golf cart with a bigger one from a snowmobile. The mechanics of the whole operation are taken care of, but we are not sure about the electrical system. the old engine used a starter generator to start and generate power for the lights and such, but the snowmobile engine has a standard starter motor and an alternator( with only two wires coming out of it) built in. We have no idea what kind of system it used for charging the battery. We have the regulator from the old engine and are wondering if we can use this. It is an old mechanical style one with three connections. D+, D-, and DF. Can we use a full wave bridge rectifier to convert the AC from the alternator into DC and then smooth it out with a capacitor and run that power into the old regulator? I’m not sure how to connect the regulator as we accidentally removed it before taking note of how it was connected. Basically I want it to be able to run the carts lights and recharge the battery after starting.
This alternator is about as simple as could be, it has no regulator.

MOST newer alternators have the rectifiers and regulator built in and therefore put out DC AND regulate it.
Check with the snowmobile company.
IF this is so, you do NOT need the regulator, just one connection to ground and the BAT connection to battery. (The BAT connection on the alternator is the one that is insulated from the frame of the alternator.)
IF not, then obtain the proper regulator and/or rectifier for the engine you are going to use. They should come with wiring instructions.

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