The diagram for the ECU connectors is if you are looking at the wire side of the connectors. You can back probe at the connector by inserting a paper clip end and touch your probe to that. I'm thinking that if the CEL is blinking when you first turn the key to on there should be alternating voltage (less than 1v to 10-14v). It should be the same at the 14 pin connector (#14 if that's how it's wired). That leaves the bulb for the O2 counter. You could wire a separate LED as described.
