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Discussion Starter · #1 ·
SO I'm swapping a 5.8L from an 89 Bronco into my 86 which had a 5.0L from the factory. The 5.0L didn't have a CEL, it had an "Emissions" light, which I believe was not hooked up because I couldn't find a Inferred Mileage Sensor anywhere in this truck.

First question... the side of the CEL that connects to the ECU the positive or the ground?
Second question... What do the leads for an "Emissions" light connect to on an 86?

Thanks!
 
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