The last owner has removed the wire from the loco to tender and wired the loco so it no longer has to be plugged into the tender. The last owner did this because he liked to run his locos with out the tender.
Hornby X6942 Drummond 700 Loco Driving Wheel Set
Hornby X6943 Drummond 700 Loco Chassis Bottom Assembly, Brake Rods
PHOTO SR DRUMMOND T9 LOCO 311