Slideout relays

Some electric slides use a relay and/or controller, and some don't. Those that don't have a relay use a polarity-reversing switch wired directly to the the slide motor. In a trailer, the system "might" use a relay and/or controller. In a motorhome, it "probably" does. If you're able to see the back of the slideout switch, that will give a clue. If it's a double pole switch with 4 or 6 lugs, it's likely a polarity reversing switch wired directly to the motor. Short of just figuring it out, the OP is doing the right thing asking for somebody who knows with the exact model rig.