3 years, 3 months ago
Where do I connect on a 90 Chevy Lumina w/ 3.1 V6 to monitor for primary cooling fan enable signal from ECM?
I have already designed a LED circuit, I simply need to know where I should look for the signal from the ECM to the primary cooling fan's relay so that I can connect there and then see, via LED, when the ECM enables the cooling fan relay.
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