Black tubing which connects to the trip odo clips to the back of the speedo located just above the level of the right angle gear attachment and to the right (pass) side of the speedo - if the tubing is there find the end and locate it through the hole on the under edge dash lip. It's a purely mechanical connection, be very gentle with it, I've already been through one speedo and with my new one I've decided to not mess with the trip odo
