99 Windstar transmission 125k miles

I replaced the transmission, and now the OD light keeps flashing. Reverse lights dont work. Cruise control dont work and lastly it doesn't go pass 3rd gear. Or thats what I assume caze im doing 60mph and the rpm is at 3000+

so, someone told me the Solenoid in the transmission may be bad.

now, is that something I can get at an auto store? If so, where on the transmission is it located and how do I replace it?


thanks in advance