The WH-6 wiring harness is used with LM-3, LM-3S, LM-2, and LM-2S locomotive modules. It is used to wire in light outputs 5 and 6 and more. Please see LM instructions for actual wiring.
WH-6 has a JST 6 pin connector with crimp style pins. We have found the crimp style pins to be far more dependable than the insulation displacement connectors used by other manufacturers.
Note: This harness is for wiring the extra outputs on the locomotives and not for track pickups and motor wiring.