85 Ford Thunderbird 5.0.....Swapped in a mustang 5.0 HO and T-5 Tranny.
Ever since the swap my speedometer hasn't worked. Lights up just fine and everything just shows 0 mph. Sometimes when in reverse I notice it registering 1 or 2 mph.
I tried replacing the speed sensor with a borg werner one from Oreilys but did not change the situation.
Any ideas on what to look for or how to troubleshoot this? Thanks guys. Jason.
Do you changed the cables with the engine?