Just finished replacing the automatic transmission in my '01 with a 3.9l with one from a junk yard.
The gear indicator flashes from R to D or it's doesn't have anything marked as I drive.
Where is the switch that controls this? on the column or on the transmission?
other than that it runs great.

 

I turned the old one in for the core so I don't have any of the parts from it to try on this one.