High Current Relay Module

The High Current Relay Module from AUTO ROD CONTROLS is an essential component for custom vehicle electrical systems, custom wiring, and high-demand aftermarket upgrades. Whether you're installing auxiliary lighting systems, electric fans, fuel pumps, or winches, this relay module handles the switching and power distribution demands that exceed standard factory wiring capacity. Automotive technicians and hot rodders rely on this unit to safely isolate high-amp circuits from sensitive electronics while maintaining reliable, consistent power delivery under sustained load.

Built by AUTO ROD CONTROLS—a trusted name in performance electrical engineering—this module features robust relay contacts rated for high-current applications and a compact form factor (6.1 x 4.1 x 8.5 inches) that fits cleanly into engine bays or behind dash panels. The design separates low-current control circuits from high-current power paths, preventing voltage sag and protecting factory wiring from dangerous amperage spikes. At just 0.75 lbs, the relay module integrates seamlessly into custom harnesses without adding significant weight, making it ideal for street rods, late-model performance builds, and utility vehicle modifications where multiple accessory circuits run simultaneously.

Installers benefit most when upgrading dual electric fans, adding auxiliary lighting arrays, or deploying winch systems that demand stable 12V supply independent of alternator ripple and engine load fluctuations. Professional mechanics routinely specify this module for clients upgrading fuel injection systems, supercharger controllers, or aftermarket ignition boxes that require isolated power circuits. The compact, modular design accommodates both traditional 12V systems and modern vehicle architectures, making it compatible with custom fabrication projects across generations of vehicles—from classic hot rods to modern truck builds.