Thanks. If you are just talking about the whisker tracks, they shouldn't need as highly rated contacts, since you'll only have a single engine on each, under 5A. They make modules with up to 8 relays, so a few of those should cover it. Try this one. I see they make 16 unit modules now. That may get a little more difficult to manage your wires though. I would stick to the 8's. They also make 2's and 4's. I've used all of them for my uncoupler project.
One nice thing about the number 8 is, that's the number of wires in a Cat 5 cable. Funny how that works.
