I found a rear harness that was already removed from the car and pulled the extra wires from the plug. I'll message you with payment info if you want it. The left side connector does have a partial crack as pictured. I melted the crack back together and it should function fine. I still have another one that I can get off a parts car, but may not have time to do it until next week.
Here's what I'll send. Wiring for both brakes including the yellow plug for reference of where the wires go.
I used a small metal tube (handle section from a broken inspection mirror) to remove the pins from the plug. I'll include it. I think that a small coffee straw might work too. Push it in around the pin, pull the wire out the back.
Here's the cracked part of the connector, melted back together.
