The voltmeter in my wagon reads .75 - 1.0 volts lower than when I put my meter on the alternator directly. I have tried a number of things to resolve this with little success. Today, I decided to run a wire directly from the alternator to the voltmeter. Now I know if I wire it directly it will eventually drain the battery if it sits for too long. So I decided to use a relay to manage the drain.
So my question is:
Will I see less voltage drop through a standard relay (SPDT) if I use the relay to connect the ground instead of the lead from the alternator?
So my question is:
Will I see less voltage drop through a standard relay (SPDT) if I use the relay to connect the ground instead of the lead from the alternator?
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