The THUNDERMAX Main Electrical Wiring Harness is a complete kit designed for street‑oriented choppers and custom motorcycles that lack a separate brake‑light circuit. Engineered as a micro‑harness controller, the system integrates ignition, starter and charging functions into a single, compact assembly, simplifying wiring layouts while maintaining reliable power delivery. The kit is supplied as a ready‑to‑install unit, eliminating the need for separate components and reducing installation time for builders who demand clean, factory‑level electrical routing.
Two configuration options are offered: the CONTROLLER MICRO HARNESS, which provides the core control module, and the CONTROLLER W/HARNESS, which includes the full harness for direct connection to the bike’s wiring. The harness is not compatible with 2004‑2020 Harley‑Davidson Big Dog models that use proprietary hand‑control systems, ensuring that the product is matched precisely to the intended custom applications.