Converts a low current control signal into a high current output suitable for ignition/accessory circuits, motors and other electronics. This enables reliable switching of high current devices from a small control source. Why you need it - Simplifies how you run high current loads from low power inputs - Improves reliability by using a dedicated high current relay rather than stressing control circuitry - Protects control circuits with proper isolation and robust contacts - Durable construction designed for automotive and similar applications Key features - 12 Volt, 40 Amp, 3 Pin Relay - Mechanical life over 10,000 cycles - Heavy duty shock molded relay socket - Interlocking relay socket - High coil capacity capable of handling demanding high current applications Practical use scenarios - Vehicle ignition and accessory wiring: drive starter circuits or other high current accessories from a low current control signal, or terminate/monitor starter and accessory lines with a reliable relay - Interior lighting and boot release: switch interior lighting or boot release mechanisms from low voltage controls without loading the control circuit - Polarity change and actuator control: operate electric door locks, actuators, or polarity-sensitive devices in automotive or DIY projects where high current handling is required This relay and its sockets provide a sturdy, high-current solution while preserving control signal integrity and compatibility with a range of automotive and electronic installations.