pins 1 and 2 on connector “a” must be wired as a twisted pair to pins 1 and 2 on connector “b”.

    pins 3 and 6 on connector “a” must be wired as a twisted pair to pins 3 and 6 on connector “b”.

    pins 4 and 5 on connector “a” must be wired as a twisted pair to pins 4 and 5 on connector “b”.

    pins 7 and 8 on connector “a” must be wired as a twisted pair to pins 7 and 8 on connector “b”.