Brand: BFGoodrich Aerospace
PN: 10037-4000-0213
The unit is pure digital and it is expecting much more than a capacitance at the input to measure the level of fuel.
The back draw if this unit is that it is totally sealed, so due the fact that I don't have any schematics of this I had to open it cutting the housing.
After tracking the electronic circuits I found out the following:
The testing circuit would be something like this:
This is what I got:
It was great to see the indicator displaying some data!! It toke me quite a lot to know how was working.
I don't have any record of the output signals in the pins 2 and 3, but I can tell that these two signals are quite complex and they are driving the probes that are installed in the fuel tanks.
Enjoy!!
You don't have to cut these gauges to open. Just need a small butane torch and pliers. Takes 2 mins or less to open up.
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