DEC remote power controller cable?

Via the Dayton Hamvention and Dan C., I now have a nice "new" corporate cabinet for my 11/23+ and two RL02's, installed and working. It came with an 874-D Remote Power Controller which I would like to use as intended (i.e. turn everything on by flipping the BA-11SA front panel power switch). That switch connects directly to a 3-pin male Molex connector on the rear of the BA chassis. The 874-D has several 3-pin female Molex connectors labeled "DEC Power Bus". Am I correct in assuming that I just need a 3-wire extension cable between the BA chassis and one of those Power Bus connectors? If so, is there a DEC part I should be looking for? If not, any ideas which mating connectors to order (it's not critical that I use factory original pieces)? The two connectors are not identical families (the BA-11SA's connector is flat on one side and rounded on the other; on the 874-D they are rectangular). Thanks for any help. -Charles