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Re: G.M. HEI pick-up coil reverse polarity
Posted to Technical Discussion Forum on 2/17/1997 3 Replies

The factory ACDelco modules are marked "P" (Positive) and "N" (Negative)

The green pickup lead on the factory pick up coil is the positive one.

QUICK TEST w/DSO -

Hook positive scope lead to green pickup lead Hook negative scope lead to white pickup lead S... Login to read more.

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