How To Convert 3 Wire Alternator 1

By | October 13, 2019



An alternator is an important component of a vehicle’s electrical system as it converts mechanical energy into electrical energy to power the engine and other accessories. Knowing how to convert three wire alternators into a two wire setup can be a challenging task, but by following some simple steps, you can do it successfully.

The first step is to locate the computer harness connector found near the vehicle’s battery. It may have three or four wires connected to it. If there are three wires, the middle wire is the “sense” or “ground” wire, while the remaining two wires are the “ignition” and “regulator” wires. If there are four wires, the fourth wire is the “sense” wire.

Next, you need to disconnect the sense wire, and then the remaining two wires should be connected to the appropriate terminals of the alternator. One wire should be attached to the “I” terminal (for ignition) and the other wire should be attached to the “R” terminal (for regulator). Make sure to secure the wiring with ring connectors and insulated shrink tubing to ensure a good connection and prevent any shorts in the connection.

Finally, you need to test the output of the alternator to make sure that it is producing the correct amount of voltage. To do this, you need to connect a voltmeter to the “B” and ground terminals. The reading should be between 13.5 and 14.7 volts while the engine is running. If you get a reading outside of this range, adjust the voltage accordingly until the correct voltage is attained.

Following these steps on how to convert three wire alternators to two wire setups will help ensure that your vehicle is running smoothly and efficiently. While it may seem complicated at first, with some careful attention to detail and a bit of patience you can successfully convert your vehicle’s alternator and have it running like new again.


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