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Old 04-02-2014, 06:01 PM   #1
jeepthrills's Avatar
Join Date: Nov 2012
Location: Verde Valley, AZ
Posts: 77
Wiring of old CCI 3350

Due diligence had me order a new CO detector as part of our refresh of the old Aerbus....The new CO detector is simple...2 wires...positive and negative...the old one has 3 wires....2 red one black...No continuity between any of them...but seems black is as it should be...ground.....one of the reds gives 12.43V....the other one seems like a ground too...but as i said...no continuity.....between the 2 reds shows 12.6V....

Is one of them power to a propane shutoff? As far as I can tell this is a CO only detector.


Rexhall Aerbus XL 2900

Probably never going to have a chance to "drive" a Boeing, so I bought an Aerbus!
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Old 04-03-2014, 03:58 AM   #2
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A three wire detector is for connecting to "house" and "chassis" battery banks. That way if one source dies the other can keep it going. I believe Fleetwood used these and it should have a diode in the circuit to prevent draining of chassis battery bank over a very long period of time.
Mike, RVIA & RVSA Certified Master RV Technician
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