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08-27-2011, 10:11 PM
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#11 |
 ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Never use a test light on a "signal". Test lights draw current and connecting one to an ECM signal could potentially damage the ECM.
That being said, it is hard without an oscilloscope to verify a pulsed signal.
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