Replacing alternator on a diesel zero turn.

[r3p1lc3]

Hi. Post is crude I'm on mobile. But here's the scoop.
I believe someone took the dummy light wire from harness and cut out a hookup directly to the back of diode plate .. why would this be?
This is on a Kubota 3 cylinder engine inside a lastec zero turn. Pretty sure this ain't factory.

Any input is appreciated.

Obviously the new alternator doesn't have the cut out for this. I'm thinking I just need to place the dummy wire back into the two wire terminal.

 

[dscheidt]

A classic three wire alternator has three wires (duh) -- output, voltage sense, and a field excitation circuit that goes through the idiot light. the field circuit is used to provide the voltage the alternator needs to start producing current. That's switched, because the if it's not, it will drain the battery on most voltage regulators. Having a working switch and light bulb is too complicated for many people, so it's common to provide the field from the sense circuit (which usually goes to the battery or fuse box, to compensate for the voltage drop in the output wire.) or the output.

I can't understand what your question is, but returning it to stock is probably the best course of action.

 

[reader2580]

My neighbor did all kinds of hack wiring to his riding mower because various functions stopped working. One time he called me because the fuel solenoid wouldn't stay open. He first replaced the fuel solenoid before he called me. He was going to rig a switch to turn on and off the fuel solenoid. I went over and found the wiring harness to the fuel solenoid was unplugged. At some point he added a push button switch off the battery to activate the starter solenoid.

His electrical issues finally got so bad he had me come over again. I took things apart to test things at the back of the ignition switch. The plug was melted which was causing all of his electrical issues! I replaced the plug with spade connectors and no more issues.

This doesn't fix the OP's issue, but it helps explain what owners do to machines when they don't know how to troubleshoot electrical issues.

 

[nadogail]

With the tiny bit of information in your post, I am assuming that someone has installed a 1 wire alternator on your zero turn.
As long as the alternator bolts in place and the belt drives it, it should work.
A 12 volt alternator is a 12 volt alternator; they are functionally interchangeable. They have to hook up and bolt up. They need to have enough capacity to keep your battery charged.