XS Power P312

Name: XS Power P312
Brand: XS Power
Price: 74.99 USD

Harness for XSP 310/320 Digital Voltage Controllers Compatible With GM “SI” Alternators - 1969 to 1988 Use this harness as the custom link between the XS Power XSP310 or XSP320 Voltage Controller, and your alternator. Install the Voltage Controller to adjust alternator output on demand for more current to your battery bank, faster battery recovery time and an extra boost of power when you need it! DESCRIPTION Harness for GM SI” Series Alternators (1969 to 1988) DOWNLOAD INSTRUCTIONS PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling.

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Updated 9/25/2026

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Frequently Asked Questions

What is the XS Power P312?

The XS Power P312 is a car audio equipment made by XS Power. View full specifications and where to buy on this page.

How much does the XS Power P312 cost?

The XS Power P312 typically sells for around $75 depending on the retailer and variant. Check the "Where to Buy" section for current pricing from authorized dealers.

Where can I buy the XS Power P312?

You can purchase the XS Power P312 from authorized dealers listed in the "Where to Buy" section on this page. We recommend buying from authorized retailers to ensure warranty coverage and genuine products.