#18 AWG wire should be used. The in-line connector for the Controller has the following DC connections.

NO. DESCRIPTION

1START: Generator start signal contact.

2 STOP: Generator stop signal contact.

3 GENERATOR DC HOUR METER.

4 RESERVED (Future ignition lock-out).

5 POWER POSITIVE: Connect to house battery positive. 2-amp fuse required. See INSTALLATION NOTE page 10.

6 THERMOSTAT 1: Connected to positive signal from thermostat/heating-cooling system, 12 VDC = ON.

7 THERMOSTAT 2: Connect to positive signal from thermo- stat/heat-cooling system, 12 VDC = ON.

8 PREHEAT: Contact for generator preheat signal.

9 START COMMON: Generator Start signal contact. Typi- cally connect to generator ground.

10 STOP COMMON: Generator Stop signal contact. Typically connect to generator ground.

11 THERMOSTAT 3: Connected to positive signal from thermostat/heating-cooling system, 12 VDC = ON. This is only available on units over S/N 150.

12 BATT SENSE POSITIVE: Connect to house battery posi- tive. 2-amp fuse required.

13 POWER/SENSE NEGATIVE: Connect directly to house battery negative.

14 THERMOSTAT 1,3 COMMON: Contact for thermostat 1 and 3. Connected to ground.

15 THERMOSTAT 2 COMMON: Contact for thermostat 2. Connected to ground.

16 PREHEAT COMMON: Contact for Preheat signal. Typically connected to generator ground.

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