When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
It's some where between the ignition and the starter if I had to guess.
IS there suppose to be 12 ohm of resistance on the positive line going to the coil with it disconnected ??? It doesn't seem to change if the ignition is on or off.
It's some where between the ignition and the starter if I had to guess.
IS there suppose to be 12 ohm of resistance on the positive line going to the coil with it disconnected ??? It doesn't seem to change if the ignition is on or off.
Need some help here.......
What should I be checking...???
I don't know the resistor value, but the wire to the coil does have resistance to prevent burning the points. It is bypassed during starting. The older cars have a ballast resistor in the circuit that usually is about 1.4 ohms. This will drop the voltage to the coil down to 9-10 volts in most cases assuming a nominal 14 V on the system. It is also bypassed during starting. The ceramic resistor block was replaced with a resistive wire on C3's. However, 12 ohms seems way too high. Sure it isn't 1.2 ohms?
There should be a wire from the starter. It's a bypass wire that supplies a full 12V when the starter is engaged. The other wire energizes the coil when the key is in run positioin. It should be a ballast resistor wire. It drops the voltage depending on load.
The reason you're getting VERY low resistance between the "run" wire and ground is that things like the radio, guages, etc that are on the ignition circuit have a low resistance.
Not a problem. If you checked between the battery + and - terminal (battery not connected) you would read about the same if anything (lights, interior lights, etc. were on.
Gary