I tried to hook up the wires but all the lettered terminals on my old thermostat don't match the letters on the Honeywell thermostat. I have the AC working but I still have three wires left over. I'm not sure what to do with them. Also note the Baystat has 8 wires.
I'm going to base this on this manual, page 8, even though the diagram doesn't exactly match up in terms of order or number (terminal names and advice are the same). I suspect that this should work but proceed with caution. I would try calling Honeywell to verify this first
Based on the manual
- Blue - Wrap in electrical tape, do not use
- Brown - Wrap in electrical tape, do not use (T was not listed anywhere)
- Black - Put in the W/Aux terminal with the white wire that's already there
If I were you, I'd clip some of the bare wires back to minimize the chance that they short against each other. Also, be sure to set the jumper as outlined on Page 9