OK, this is a very basic question, but - how do you remove the ECU connectors (25 pin under right quarter panel)? With parts hard to find and old plastic getting brittle, I do not want to break them. I see a small phillips screw on the front of them that I have removed. And I see an arrow pointing forward. But when I play with them trying to pull them off I see no movement. Push forward and pull out? Any other screws or pins to push/pull etc? Thanks for the help!