XSP310-312

The XS Power XSP310-312 pairs the XSP310 Voltage Control Module with the XSP312 wiring harness for GM CS series alternators used from 1986 to 1997. Buying them together means the module and the connector are matched from the start, so the install is a wiring job rather than a research project.

The XSP310 controls one alternator at a time and operates from 10 to 20 volts. Dip switches set the working range: the 12V setting runs from roughly 14.2 volts, depending on the alternator, up to a 15.2 volt programmed limit, and the 14V and 16V setting runs from roughly 14.2 volts up to a 19.5 volt programmed limit. That gives you real control over charging voltage instead of accepting whatever the factory regulator delivers.

The XSP312 harness handles the connection side for GM CS series alternators from 1986 to 1997, a range that covers a large share of GM trucks, vans, and cars from that era. Those are common platforms for high-power audio builds and hot rod electrical upgrades, which is exactly where a controlled charging voltage pays off.

Use the kit to charge a 16V competition bank properly, to hold voltage up in a heavy 12V system that sags at idle, or to keep output consistent in a racing or dyno application. One kit, one alternator, one clear path to the charging voltage your build needs.