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Bob Kontak Bob Kontak is online now
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Join Date: Nov 2007
Location: North Canton, Ohio
Posts: 20,903
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Many of the wires coming out of the ECU are meant to carry a small handful of volts rather than a full 12V. I know this because if you get into testing a single component you may find that the particular wire to one of the contacts only carrys say, four volts.

I don't know how a 12V bulb could destroy the ECU if you tested it with a traditional light on that line. It may be what he's talking about?
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Old 09-12-2023, 04:33 AM
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