Remove the original 8 pin plug from the decoder wires and solder this item on in it's place. Uses include fitting a Hornby TTS decoder to a Bachmann 21 pin loco for example.
Train-O-Matic Micro Decoder Wires + 6 Pin NEM 651 (Art 02010222)
LaisDCC 860012 Wires Only Motor Decoder
Laisdcc 870021 4 function 8-Pin DCC Decoder with Stay Alive option. UK Stock
Laisdcc 4 function MTC21 Pin DCC Decoder with Stay Alive options. New UK Stock
Laisdcc 870013 6 Pin Motor Decoder (Supports Stay Alive)
LaisDCC 870021 8 Pin Motor Decoder (Supports Stay Alive)