Hi , a couple of months back I posted a question regarding capactive fluid level sensors ( they turned out to be conductive) and received the help I needed in fooling an external PC water cooling unit into thinking it had the level sensors connected when it actually did not , the system has worked fine now without any alarms which would occur if the sensors were not connected, I now have one further modification which I would like to do in that the system uses a fluid flow meter of the rotating vane type which also has an LED this connects to the units circuit board and then to an IC which controls and monitors pumps fans flow and level sensors and temperature sensors I want to ditch the flow meter as I have another within the computer itself and I do not need 2 which is detrimental to good fluid flow within the cooling loop and having heavily modded the external cooler there is now no space for it's flow meter and i've had to mount it outside which is far from ideal , my limited electronics knowledge is basic at best but I have determined that it may be possible to replace the flow meter with a pulse generator and have purchased one via ebay it has 3 pins VCC GND and OUT but I am unsure as to how I would connect it to the external coolers flow meter plug (socket) the flow meter has 4 wires red black white and yellow which obviously carry the supply current the LED's power and also the pulse signal from the flow meter, Multimeter readings from the 4 wires are as follows Red = 4.88 volts Black = GND White = -018 volts and Yellow = constantly fluctuating between 1.88 and 2.05 volts I do not need the LED function and want to eliminate that part entirely but am unsure as to whether it is the Yellow or the White wire which supplies it's power and also whether it is the White or Yellow wire which I should connect along with the Black and Red to the pulse generators 3 pins ie VCC GND and OUT .Any help or thoughts would be very much appreciated , Gary .
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