Any luck with getting a pdf?
I've got a 99 OBW as well and the speedo has been working on and off over the past couple of months. It usually stops working when I backup and then comes back to life 10 - 20 minutes later in forward. Weird.
Looking at all the other similar complaints about their speedos failing however doesn't seem to point to any one particular solution. But I was hoping to see if anyone followed up with your asking for a exploded view of the cluster.