| Color | Usage | |
| Brown - Brown-White | Tstat | |
| Orange - Orange-Orange White | Tstat | |
| Blue | One wire data | |
| Blue-White | One wire Ground |
Added a Honeywell Wifi thermostat and 24VAC transformer on the upper ledge which is a plug in Wall wart.
| Incoming Wire Color | Jumper wire | Usage | Honeywell Term | |
| Brown - Brown-White | White | Tstat | W | |
| Orange - Orange-Orange White | Orange | Tstat | Rc | |
| — | Red | 24VAC | R | |
| — | Black | 24VAC | C | |
| Blue | — | One wire data | — | |
| Blue-White | — | One wire Ground | — |
| Color | Usage | |
| Brown - Brown-White | Tstat | |
| Orange - Orange-Orange White | Tstat | |
| Blue | One wire data flue | |
| Blue-White | One wire Ground |
| Color | Usage | |
| Brown - Brown-White | Tstat | |
| Orange - Orange-Orange White | Tstat | |
| Blue | One wire data ambient | |
| Blue-White | One wire ambient Ground |
| Color | Usage |
| Brown - Brown-White | Tstat stage 1 |
| Orange - Orange-Orange White | Tstat stage 2 |
| Green - Green-White | Common |
| Number | Usage |
| 21 | Porch Sprinkler Controller |
| 22 | Panasonic VP401 cam |
| 23 | Feed from Family Room Closet |
| 24 | Furnace - GH |
| 25 | GH Heater Tstat |
| 26 | GH Vent Tstat |
| 27 | Porch Furnace and One Wire |
| 28 | Porch Tstat and One Wire |
| 29 | Relay Box |