RL01 drive select plug and power supply questions

Does anyone have a spare RL01 drive select plug for drive "0"? I recently acquired an RL01 drive (thanks Lyle Bickly and Jon Miles!) but it's missing its drive select plug. This is one of the four lights on the front of the drive that has the number "0" printed on it for drive 0. Does anyone have one they're willing to part with? Also, the PDP-11/73 that I acquired is in a BA11-NC box. Does anyone know how much power the power supply in this box can supply? There is a list of the cards in the box and the power each one consumes and I've inserted an additional card (an RQDX1 controller) that draws 6.4A at 5V and I'm not sure that the power supply can handle it. That would bring the total to 26.9A at 5V where the original total was 22.3A. I could remove a DHV11 card that draws 4.3A to bring the total down to 22.6A if necessary. What is save with this power supply? Thanks, David