am wanting to simulate a rotary switch circuit that has 6 different resistors on it. As the switch rotates a different resistor is selected letting an engine ECU know what gear a motorcycle engine is in....
...with current being the variable.
Six transistors connected to 6 different resistors should work.
That sounds like heavy current, not the sort of thing you can get a chip to do.
Maybe not... If I understand correctly, he is only (simulating) sensing
which gear is selected, he's not actually moving a gear lever.
Have you measured the current or do you know the resistor values and voltage?
Right... He has to know what value & wattage resistors to use.