What plug is this?

You are sooo right. I’m so deep into this car I can’t see past the windshield.

I saw it after I wrote the post. Sorry guys. Does anyone know where the 4 pin plug is for the tach generator is? I need to check the tach to see if that has the rest of the harness. Time to shut down for the day- I’m smoked.

on a 65 is where your left knee hits the kickpanel, pull it back and you should see the pancake sender and the 3-4 wire harness.