We just buttoned up the gearbox cover on our 1964 TR4. We have the speedometer cable exiting from the rear of the cover, through the floor with the handbrake boot. We are not sure where to go after this. Somehow we need to get into the engine bay, over to the driver's (left) side, and into the speedo. How is this routed? Are there special clips or holes in the frame or anything like that? Any help and/or pictures would be greatly appreciated!