This harness measures 88mm long and features an 8 pin NMRA plug to 9 pin JST connector.The harness is suitable for use with any decoder having an NMRA Compliant 9-pin JST connection to convert it from a hardwired decoder to an 8 pin decoder for easy installation into an 8 pin DCC ready locomotive.Works with TCS decoders - WOW Sound Steam, WOW Sound Diesel, T1, T1-LED, T4X, T6X