Pollak 21-370 Precision Ball Switch – Normally Open (N.O.) – Fits Weather Pack (WP) 12015792

Superior Environmental Sealing for Heavy-Duty Performance

The Pollak 21-370 Precision Ball Switch is a high-performance electrical trigger designed for vehicles operating in the most demanding conditions. Engineered to mate specifically with the Weather Pack (WP) 12015792 connector, this switch provides an airtight, moisture-proof connection that is essential for under-chassis and engine-bay applications where exposure to water, mud, and chemicals is constant.

Precision Mechanical Switching This Single Pole, Single Throw (SPST) switch features a Normally Open (N.O.) configuration. It serves as a momentary contact sensor that completes the circuit only when the precision-ground ball is depressed. This makes it an ideal component for automated backup light activation, neutral safety circuits, and PTO (Power Take-Off) engagement indicators.

OEM Reliability and Build Quality Constructed with a rugged, zinc-plated metal body and high-grade internal snap-action contacts, the 21-370 is built for longevity. It offers consistent actuation over thousands of cycles, ensuring that your safety and functional signals remain accurate throughout the life of the vehicle.

Key Features:

• Weather Pack Compatible: Designed for a seamless, sealed fit with connector WP 12015792.

• Normally Open (N.O.) Function: Momentary activation ensures immediate signal response.

• Sealed Terminal Interface: Prevents corrosion and "green wire" rot in high-moisture areas.

• Corrosion-Resistant Housing: Heavy-duty metal construction survives road salt and grime.

• Direct OEM Replacement: Manufactured to meet or exceed original equipment specifications for trucks and industrial machinery.

Common Applications:

• Commercial Truck Backup/Reverse Light Activation

• Neutral Safety Start Sensing

• Transmission Position Indicators

• PTO Engagement Sensing

• Agricultural and Off-Road Equipment