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Old 12-20-2011, 07:43 AM   #21
speedygonzales
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Join Date: Jan 2006
Location: Smithfield, VA
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Ground is pulsed, not +12

Quote:
Originally Posted by BarryB View Post
I put it to the hot side of the injector leads. had someone crank it over. It would light up and stay lit. It didn't pulsate. It did this on all the ones I tried. soon as you started cranking it would light up and stay lit. Is that right????
Injectors always have +12 volts when the key is on. The PCM pulses the ground to fire them. Incidentally, it happens so fast you need a noid light to see it.
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