You guys are normally very switched on & helpful so thought I would ask here, might be the wrong place but shove me in the right direction if it isn't.
I'm making my own fuel sender for my kitcar, the system works in principle, using a float, reed switches, magnets & resistors. My only problem is the calibration, I'm using a Smiths fuel gauge out of a Triumph (that's the tenuous link to uk.rec.classic.cars) but I do not know what the range of the gauge is, how do I find out? other than buying loads of different resistors & using trial & error. I know when my tank is empty I have a reading of 80 Ohms & the gauge is showing 3/4 full, clearly the resistance is not high enough. Would I also be right in thinking the gauge should be also going through a 10V voltage stabiliser?
Thanks
Alan...