Fire Under Dash- Help Identifying Part Numbers

Hey guys-

Months ago my OBD stopped working. No power to it. Fuses fine. Used meter and no power. Powered OBD reader showing some comm errors.

I went to finally take stuff apart and diagnose it and gave up, but the day after tinkering my headlights stopped coming on. Fuses fine. No headlight light on the dash either. No high beams. Everything else worked on the headlight switch (DRLs, turn signals).

Well today I dug deeper and found the issue. I had some water coming in from the large grommet at the firewall two years ago (since fixed) but I’m guessing it started this process.

I am looking to see if anyone knows if I can get these connectors separately, if anyone knows a part number. My fear after all my research is the dealer will want to replace the entire wiring which would be thousands.

I have not take anything apart further to see if this grey male plug can be separated from the wires behind.

Thoughts, suggestions, and part numbers appreciated.

 

I believe that is connector IA1, Toyota sells the connector bodies and pins separately and they are typically pretty proud of them.