Banked Relay System 4 Relays

The Banked Relay System 4 Relays from American Autowire is a complete electrical distribution panel designed for custom automotive wiring projects where reliable power management is essential. This four-bank relay system serves hot rod builders, classic car restorers, and modern vehicle customizers who need organized, safe switching of high-amperage circuits without factory harness limitations. The kit addresses a fundamental challenge in custom automotive builds: distributing power from a battery to multiple accessories while protecting each circuit independently and reducing voltage drop across long wire runs.

Operating at 12 volts with a 40-amp capacity per relay bank, the Banked Relay System 4 Relays uses individual relay modules to isolate and control separate electrical circuits—such as fans, fuel pumps, lighting, and auxiliary systems—from a single control point. Each relay acts as an electronic switch, allowing low-amperage trigger signals (from switches or modules) to safely control high-amperage loads without overloading control wiring. The system ships with all necessary wiring included, eliminating the need for sourcing additional connectors or harnesses and enabling faster installation. The compact design measures 9.1 x 4.2 x 11.7 inches and weighs 2.7 lbs, fitting easily in engine bays, under dashboards, or custom enclosures without taking up excessive space.

This relay system is ideal for builders working on universal 12-volt vehicle platforms—hot rods, muscle cars, trucks, and resto-mods where factory electrical architecture is being replaced or significantly expanded. The four-bank configuration accommodates typical custom builds requiring independent circuits for electric cooling fans, auxiliary fuel systems, upgraded lighting, and accessory power distribution. Installation requires basic wiring knowledge and compatibility with any 12-volt negative-ground electrical system. The included wiring harness significantly reduces assembly time and ensures proper gauge selection for safe operation at rated amperage, making the Banked Relay System 4 Relays a practical solution for organized, scalable power management in custom automotive applications.