Thanks very much.
So, the red/ white stripe wire from the f4 fuse is shorting? Measure continuity and resistance from the male pins at the O2 connectors? Will it display voltage with the key in pos2? Not crazy about starting the car with me laying under it.

Do the downstream O2’s have the same connectors, not seeing any?

I have 3 of the 4 O2’s disconnected, fuse 4 still blows.


Sent from my iPad using Tapatalk