Connected EB1 and EA3 and can confirm that I'm getting voltage from the black & red striped wired in EB1 to a chassis ground with the ignition on. Did want to ask though, I used pin 4 though instead of 1, since pin 1 doesn't have a wire and the female end of EB1 doesn't have a metal protruding terminal for pin 1 (like the terminals sticking out of EA3). Hope everything's good here though since I did use the black and red striped wireNo problem.
Can you try the same test with the big Black w/Red strip wire in Pin 1 of EB1 just to confirm you are actually getting a reading and your tests are correct. This wire should have a voltage though it with the ignition ON. It has nothing to do with the alternator. You will need to have the plugs plugged into the fuse box for this to work.