WS500 Wiring Harness

Wiring harness for WS500 alternator regulator.

Note:  As of Oct 1, 2023 the 1 ft alternator temperature sensor must be purchased separately.

Includes branches for alternator, panel and battery.   Select which configuration you need, either P(Positive excitation) or N(Negative Excitation)Regulators as field windings have two possible field polarities. It is important to know the difference when installing different regulators or testing regulator function. The two types are as follows:a. Positive Polarity. The positive regulator controls a positive excitation voltage. Inside the alternator, one end of the field is connected to the negative polarity. Alternators with this configuration include Bosch, Motorola, Ingram, Sev-Marchal (older models), Silver Bullet, Lestek, Balmar.

Polarity Test.

To test, use a multimeter on the ohms x 1 range and connect across the field connection to an unpainted part of the alternator case or negative output terminal.  Meter Reading. The reading should be in the range of 3 to 8 ohms.