You are saying D6 is the ECU pin for O2?
I ordered a Bosch 15730 o2 sensor, it's a 4-wire.
I was going to splice the old 1 wire into that for the 0-1v line.
The old sensor line goes right up to the left rear head area, so i was going to run the two ground lines up that O2 1 wire jacket and bolt them to the ground point on the back of that head.
Also the O2 bung is very close to where I have the 1st/2nd gear transmission switch disconnected, and the connector is shorted so I can manually control the 4+3 OD with the console switch. This connector is supposed to be a switched 12v. I was going use that for the 12v power. I was looking in my 85 FSM for some wiring details on the transmission switches, but had a hard time finding something useful. It's a PDF from a CD and a pain to find stuff on.
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