Dmon1996

I'm in the process of dismantling my XXL for rebuild and found a tiny chrome rectangle in the guard around the front drive shaft. I realize this should be stuck to the rubber boot of the u-joint for the reciever to get the data for the truck speed. However, I do not know exactly where and don't know if it goes on length wise or width wise (or stuck front to back or wrapped around the boot). Anyone know? My manual does not seem to indicate which way it goes...