I have a '74 oil temperature combo gauge for a 2.0 liter but dont have a sending unit. I know you have to have one with the right ohm output or something or it won't work. I believe the original sender unit is part 039-919-268 which is long out of production. Someone suggested part 901 641 632 00 as a replacement. I think that one originally goes with a 914-6 combo gauge or a '74 or newer 911. Does anyone know for sure if that will work? Any suggestions or answers would be greatly appreciated?
THanks