speedometer help

Hey all. For a while now my speedometer has barely worked. It'll jump one time and then not work the other. But a while back, I discovered 2 cut wires near the VSS (which i replaced a while back, i dont know why I didnt notice it) and im guessing thats either the issue or partially the issue. If...

I’ve got a 1997 ford explorer sport I swapped a 4.6 into out if a 2004 mercury grand marquis. The speedometer isn’t compatible with the output from the 2004 ecu/pcm and it doesn't have a tach feed. I plan to resolve the tach feed by swapping the ecu for one out of a 2004 mustang gt but it wont...