This voltage-sensing module is designed to trigger an in-dash warning light whenever charging system voltage drops below 11 volts. It’s an ideal solution when running a one-wire alternator, or as added peace of mind alongside a voltmeter to monitor charging system health.

The module works with both LED and incandescent indicator lights and is simple to integrate into custom or restoration wiring projects.

• Activates a warning light when system voltage drops below 11 volts
• Ideal for use with one-wire alternators
• Compatible with LED or incandescent indicator bulbs
• Helps monitor charging system performance
• Includes detailed installation instructions
• Compact design for easy installation
• Sold individually