I am supplying 3.2 VDC to a device over 26awg rj11 phone cable. The device requires only 75 mA. I can use the readily available voltage drop calculators to calculate voltage drop over various lengths of wire. If I add a single LED to the device how to I determine the current to recalculate voltage drop? If I add a current limiting resistor to limit the LED to 10 mA do I recalculate using 85 mA (75 plus 10)?