In Reply to: 9N coil posted by Les Leach on April 26, 2018 at 15:14:31:
" a " resistor?
What does it look like?
6v or 12v coil doesn't matter, you must use the oem ballast resistor.
But....if you have a 12v coil, do not use any other resistor.
And.....if you have a 6v coil and want to keep it, yes, you need another resistor in the circuit. Do NOT just buy one and install it w/o measuring it first, no matter what it is advertised as. A 2 ohm resistor, plus the 1.7 ohms (hot) of the oem resistor will get you below 4 amps running current. 2.5 ohms would be fine too.