Oops. Didnt post the speedo cable pic. Also resized the temp gauge pic.
Thanks for all your help!
I am pulling the new alternator now and am going to have it tested. I might try to return it and grab an internally regulated one. Any preference on which model to grab one from? I've read that an 84 trans am or a 86 c10 are the way to go.
Speedo cables: