Home › Forum › Ask A Member › 6V-12V question relating to 1956 Javelin › Reply To: 6V-12V question relating to 1956 Javelin
May 15, 2021 at 11:40 am
#238418
What this is telling you is that the resistor is DROPPING or reducing the voltage by 7.8 Volts. In other words, 12 Volts minus 7.8 Volts equals 4.2 Volts available at the solenoid. Your reading of 3.5 leaves 0.7 Volts being lost somewhere else, which can be meter error or just resistance in the rest of the wiring, or whatever.
Bottom line is your resistor is too high an Ohms value.