I just picked up my NX kit (used, but good deal). I read the install instructions on NX's site and it does not mention a relay for the opener, just thier bottle opener switch (believe it has something like 6 terminals?). However, i was told that i may need a relay for the bottle opener also. do i need any other relays or things of that nature to complete this or do i just get the switch, follow the diagram, power it on, and go?