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Old 09-17-2021, 12:07 PM   #21
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Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
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Default Re: Catapillar ECU repair, need N548AB replacement?

are source or drain grounded? Drain or source connected out to the pins?
Found which pin is ground? battery 24V? 12V?
Those three pin axial devices are capacitors? What voltage/capacitance?
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