8-Pin to 21-Pin Decoder Adaptor (DCC NEM652 to 21 Pin MTC Socket)
European Hardwire Plug (MALE) 21-HWM-5PACK – #TCS-1653 – Litchfield Station
MTC21 (NEM 660) plug for analogue operation – Almrose
1676 8-function decoder for HO-Scale locomotives equipped with a MTC21-pin connector and Keep-Alive wires and connector – #TCS-EU821-KAC – Litchfield Station