[Biff]

A dip relay would do the trick for the "jumper" side, The current the coil draws is a published thing and a long time ago they were avialable from Digi-key. I would talk to the folks at Innovation First If the digital outs can sink the current. If you get dip relays get the ones with internal diodes, without diodes, the back emf can fry things, else put a diode as clsoe to the coil wireing as you can. If all is a go in terms of the rules you may have to use a driver transistor to keep the current to what the controler can do, OR Use a spike with diodes like called out in the <5.6.3> to drive two relays and avoid the whole asking permission about hooking directly. Also the information you seek may be in the user guide for the full size controler. Good luck