LP gas detector replacement

[NO3putt]

Need help replacement of CCI LP Gas Detector with one that says is a direct replacement, Safe T Alert, Combination Carbon Monoxide and Gas Alarm.

1. Anyone know where the fuses are for the LP Gas Detector? (Could not locate any labeled as such in front electrical fuses boxes or fue box located in rear by inverter)

2. The old one has two red wires (+) one from the house batteries and one from the chassis batteries, and one yellow wire running to the gas value on the propane tank.

3. Replacement calls for one (+) and one ground from the house batteries, none from chassis batteries. Gas value calls one wire from gas value to monitor and one to house battery ground.

One problem is there is no ground currently running to the old monitor location at all. Instructions say to just cap off the chassis battery and not use, not an issue.

Is the monitor connected to the batteries directly?

Thanks
Skip

Anyone change theirs out?