On the same subject, what is a good test to verify generator output is performing to spec?
Answer Hi Bob, Amperage is 100 dependentt on load so you must test voltage which is the “Push”. First put a voltmeter across the battery posts (not the cable ends) and read battery voltage (Aprox 12.5v) Then start the engine and set it at a fast idle (Aprox 1500 RPM) and read battery voltage again. (13.8v to 14.5v) If it is less than that or more than that, you have a problem. It does not tell you where the problem is but just that it is not correct. Check all connections and belt tension and you should do a voltage drop test on all the power cables and ground cables and if nothing is found you can do a “Full Field Generator” test. This is done by making up a temp test cable using a 12 ga. wire that will reach from the generator to the battery. Add a short pig tail to one end of the wire end (this can be a smaller ga wire like a 14 ga.) Remove the two wires off of the back of the generator and place them so as not to get in contact with anything and connect your 12 ga wire to the large
