1984 1200 int knowledge challenge. What is a spark relay???

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Nightcorona

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Jul 20, 2016
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Location
Nashua NH
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Under the coils is this strange box with many wires.
I couldn't find much reference to it. What is it and its purpose.
 
Grn
Baby blue
Brown blue stripe
White
Black yellow stripe
Blue black stripe
Green baby blue stripe
Orange white stripe
White black stripe
 
A spark relay is an amplifier that takes the small electrical signals from the pulse generator/trigger, amplifies them, and sends them to the coils to fire the spark plugs. They were used before the computerized ignition systems came to be. That's my understanding, anyway...
 
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