Posted by Steve@Advance on June 21, 2021 at 17:49:41 from (99.190.215.237):
In Reply to: Ammeter??? posted by db0941 on June 21, 2021 at 16:59:05:
An amp meter measures current flow, be it coming from the alternator going into the battery, which is good, or flowing from the battery to run the ignition and accessories, which is not good.
So, there is no ground connection to the ampmeter.
You will need a #10 wire from the battery, usually connected to the starter solenoid post, the same side the battery cable is connected to (this keeps the wire away from the corrosive battery). This will connect to one side of the amp meter. Nothing else goes on that post but the wire from the battery. If there is any other wire on the battery cable, it needs to come off and be rerouted to the other post of the ampmeter, along with all other ignition and accessory loads. Typicaly there will be 3 wires on the other ampmeter post, one going to the ignition switch, and one for the lights or any other unswitched accessories, and a #10 wire that will connect to the output (BAT) post of the alternator.
The ampmeter will probably not be marked - or + on the terminals. It's just trial and error which post to use for the battery. If it reads backward, simply reverse the wires on the ampmeter.
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