So I took your advice and traced back the wires leading off the speed sensor and about 2 feet in I found a spot where the plastic conduit had broke. The 2 wires were rubbing together causing the insulation to wear through!! I'm guessing that wind was causing the bare copper to come in contact hence the speedo problem at highway speed. Anyway I cut the wires and connected them with butt spices, wrapped them tightly with Super 33, and finished it off with heat shrink that I had left over from an underground splice kit. I hope to not have anymore problems with it but if I do I'll know it's not the speed sensor becuse I just replaced 1 that probably wasn't even broke. I appreciate all replies to my post especially Paw Paw's THIS WEB SITE IS AWESOME!! I'm not much of a mechanic but my day job is residential/light commercial electrician so if anyone has any ?'s on that matter feel free to email them to jekstrom86@live.com THANKS