[Racer26]

@Alan et al: I believe the OP is mistakenly referring to the NI 9472 module as a "relay". The part I'm not understanding here is the question. If you have wired one solenoid to the SOLENOID BREAKOUT module, which plugs into the connector on the NI 9472, why are you having difficulties wiring a second?

There are 8 ports on the Breakout, and you simply wire them to your solenoids, and write some code to turn them on and off at the appropriate times?

EDIT: Side note, the OP is listed as having association only with an FTC team. Is this correct or just out of date. This could explain why they're having difficulty with FRC gear.