Tom-
Thank you the information. I should have known better.. That said, this is what I’m thinking:
1. Use the relay Bob posted
2. I purchased a 5vdc wall wart
3. The + from the wall wart goes to the + on the coil. The - is split with one lead going to the - on the coil. The other - goes to the IN on the AIU ACC port. The AIC 1 output goes to the control on the coil.
4. My 21vac track power gets connected to the COMM and the NO on the relay.
5. Activating thr AIU sends the signal to the relay and closes the switch which powers the isolated spur.
Is this logic correct?
