Update to the ABS issue on my passenger side: Took the wheel off. Unplugged the sensor. It's resistance values are OK, and it seems to generate voltage when spinning the hub.
I followed the connector back up to above the oil filter and found a plug. I unplugged it there and snaked it out and tested the wires, they both are fine! ???? I was expecting a broken wire. I even tested resistance as I flexed the harness every inch or so, wire is fine.
Plugged it back in the the ABS sensor, tried testing the harness from the end I unplugged above the oil filter: open circuit. Unplugged it again, tested the ABS sensor and it's fine.
The connection is broken in the weatherpack plug itself. On further inspection I noticed the rubber boot missing. The pins are fine with no corrosion. I didn't have a rubber boot/seal around for the weatherpack so I ordered a repair harness. I'm thinking that the seal that is missing on the weatherpack connector helps locate and keeps the pins in contact.
What a weird ass problem.
