What you describe is just a light, not a CEL (Check Engine Light). The CEL gets 12V ignition power and a wire from the ECM that grounds the light to turn it on. I don't recall the pin number off hand, but it is a brown/white wire.The light will not flash at all. From the time I turn the key on the light just stays on.
The wiring to the light is just a power and a ground. The bulb socket has a single power wire coming off of it. The bulb socket grounds itself to the speedometer housing. I ran the power to the light bulb wire and the ground to the speedometer housing.
I ordered a v6 CALPAK chip today.
I have another prom chip that I can test with as well.
The jeep does run well and the data on my scanner looks great too.
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