West Kalgoorlie, Aurizon intermodal train 2MP1. Coupling between second unit locomotive and the inline fuelling waggon QQFY 4271, shows the MU or Multiple Unit red cable going into the socket with the cream cap on the waggon and the red cap on the loco, behind that is the crimp fitting is the in-line fuel hose between waggon and the loco along with train air pipe and coupling.