Posted by Steve@Advance on July 16, 2021 at 06:03:41 from (99.190.215.237):
In Reply to: Re: Electrical help posted by grandpa Love on July 16, 2021 at 03:46:25:
To determine what coil you have and if it needs a resistor, disconnect one or both primary coil terminals (the + and - studs on top).
Set the knob on the meter to X10 ohms. You will be reading the top scale. Touching the leads together should swing the needle to the 0 on the right. If not the battery may be low or there may be an adjustment.
Touch the leads to the coil terminals. Wiggle them around to get a good steady reading.
A true 12v coil, one that does not need a resistor, will show about 3 ohms resistance.
A 6v coil OR a 12v that is designed to operate with a resistor will show about 1.5 ohms.
End result, for a 12v system, you want either a 3 ohm coil and no resistor, or a 1.5 ohm coil used with a 1.5 ohm resistor in series ahead of the coil on the incoming voltage from the switch.
Simply testing voltage before and after the coil will not give you an answer.
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