Another question concering fuel gages: I changed the fuel gage, bu could change the sensor. The sensor of the new gage doesn´t fit to the safety fuel tank (it works like the valve in the water toilet and needs space to swim!).
If fuel is low, the gage shows a little bit less than 3/4. If it is empty, it shows "full" (maybe I have to reverse the fuel pump [
]!).
I remember vaguely that there was something like I = U / R. That´s why I think I have to measure the resistance of the sensor with full and emty tank. Then I have to try out, what the gage shows depending on the Input. That´s where my knowledge of electrics ends (I know there is + and - and you need both connected to get some reaction - that´s it).
Question #1: How can I measure the Input the gage needs to show "empty" and full (I guess it works proportional)! Further on I guess, I have to put some resistors into the circuit. Question #2: Where? And I guess I have to calculate, which resitors I need to get the fuel level aligned with the indication of the gage? Question #3: How can I calculate the resistances of these resistors?