Ok, reviving this thread since all the info I found here, and other threads, is kinda contradicting, and sometimes confusing... to me
So there I am, amidst my VM1000 to Garmin G3X Touch upgrade... up to now my aircraft was equipped with a dual E.I. indicator.
I've decided to ditch it, and use the fantastic capabilities of the G3X thru the GDU470 and the GEA24.
The aircraft was built using Van's Capacitance Fuel Quantity sensors, which are really only 2 isolated aluminum plates installed in each tank. As an aside, this system has proven very precise and reliable over the past 18 years and close to 1'800 hours.
Now the sensors each have 3 wires, red/white/black. I pinned them directly into the GEA24 (pins 5/7/6 and 8/10/9) according to their color, referenced in figure 26-2.1 of the G3X install manual, and now do get a voltage readout of around 5.3V with the tanks about 1/3 full.
Confused by previous posts mentioning those Princeton converters... does a Garmin G3X Touch configuration still require those, or will it work without?
Emptying, or refilling a tank, and looking for a change in the voltage, should provide a direct answer...