erik fiss | galleries | Yashica Electro 35 Repair Manual

Note the color coding of the wires coming from each port. In different cameras, the color codes may vary slightly from port to port. But they're generally consistent from side to side. Here's the normal color coding of the wires from each port:

PORT A -- green, dark blue, orange, and brown
PORT B -- red, white, and purple
PORT C -- yellow, yellow, red, and black
PORT D -- red, black, and brown.