Thanks Klaus,

The block pops out with a spring latch and then release the pair of
connectors plus a single wire to a spade lug and it's in your hand.
The cover by the OBD push button pops off and then its easy to solder
the wire back. (I used the brittle old wire cuz I was too lazy to search for
a bullet connector and a hunk of stranded wire)
The whole job only took a few minutes and was simple.

I reset the slow front O2 sensor codes and still am thinking about which o2 sensor to get. One mechanic here uses only Volvo O2 sensors (Yikes, hang on to your wallet)

Whats that single wire tucked in there? Does it go to the starter solenoid by any chance?

Bill