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Originally Posted by California98Civic
This is great. To be clear, the first set of photos shows that the resistor on the alternator circuit does in fact take the juice out of the field windings. In the second set of pics, you did not use the resistor on the alt circuit and the alt continued powering but at a reduced rate, correct?
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Yes, you are correct for the first tests. Only a resistor was added to the one disconnected power wire. The second test involved the 4wire disconnect circuit. It would basically unplug the 4 pin connector without me having to physically unplug it while the car was running. I included more detail on the tests and even a video of the effect of the alt. 4pin connector unplugged after the engine is started.
I did not actually to see if it still generated power/amps if demanded like I did in the second test, I only tested the voltage. I can do a test with the load bank while the alt blk/yel wire is loaded with the 6.6ohm resistor Tuesday. The equipment i used for these tests is at my place of employment being the O-scope and battery load tester.
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Also, this is after the car is running, no? If you start the car with the alt unplugged the field windings do not fire-up, no?
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All of my tests were disconnects after the engine was running. I did a quick retest of Battery voltage before startup and Alt. 4pin connector unplug then startup. It shows the alternator will not produce power until it is given power. After that it cannot be turned off by unplugging the 4pin connector as shown in the other tests.
