The WH-6 wiring harness (one per package) is used with LM-3, LM-3S, LM-2, and LM-2S 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 with crimp style pins.  We have found the crimp style pins to be far more dependable than the insulation displacement connectors.