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Re: Secondary Ignition Wave Forms
Posted to Technical Theory Forum on 4/21/2016 21 Replies

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Hello, Marlin

I can't speak for all 3-4 wire coils, but each coil should have the B+ primary and B- primary wires. The other two wires indicate to the PCM if the coil is firing as it should.

On th... Login to read more.

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