Eaton Manual Transmission Harnesses

When converting a Kenworth truck away from a Paccar engine, you lose the factory vehicle speed signal that the ABS system normally provides. Our Eaton manual transmission harnesses restore full transmission monitoring and correct signal output so the speedometer, cruise control, and other chassis systems function properly.

This harness is specifically designed for 2008 and newer Kenworth T660, T800, and W900 models equipped with NAMUX 2 and NAMUX 3 chassis electronics. Each harness provides a clean, plug-and-play connection between your Eaton Fuller manual transmission sensors and the truck’s existing chassis wiring.

These harnesses are commonly paired with our clutch linkage kits and shift lever kits for a complete manual transmission conversion. Browse below to match your chassis and transmission model, or contact our team to confirm fitment.