Distributor plug? HEI

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72chevy2door

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I'm curious as to what this plug is for. I have never seen a HEI with one of these. It's on a 1986 lwb C10. 305/350. Is it important? Such as if this distributor ever goes out will I be able to use another standard HEI that won't have this plug?
 

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72chevy2door

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Florida
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Jeff
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1988
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1500 Sierra Classic suburban
Engine Size
350
It leads up into this harness
 

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350runner

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That is the electronic spark control harness. Most of us do away with it. Usually it malfunctions giving all sorts of problems. If it works don't fix it. Yes you can drop in a regular H.E.I. and ride on... probably with more power and such.

Sent from the dust in front of you!
 

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