The Weather Pack system is a sealed, modular plug connector system for electrical systems. The system's reliability has been proven in use on many brands of street cars. The security and reliability makes it ideal for race car electrical systems.
The Cavity Plug can be used in any Tower Connector Body (Part Nos. 4185-001 through -005) or Shroud Connector Body (Part Nos. 4185-011 through -015) to seal an unused pin location.
You can also use cavity plugs to make your own dust cap by filling a connector body with cavity plugs as shown in the photo. Using such a dust cap is highly recommended for preventing contamination when a Weather-Pack connector is disconnected.