Greetings so I’m having a bit of a issue I’ve been having code 14 for a while.  I’ve changed out speed sensor for a new one and replaced the dash with one I found in the yard. Im still getting code 14. I’ve checked fuses and connectors and found these two funky connectors on right side. The cruise control lights up on dash however my overdrive doesn’t seems to work or show on dash. Any points in the right direction for a greatly appreciated. 

Welcome to the Club. Would you mind letting us know details about the car? A bit more information/pictures would would help identifying the "these two funky connectors on right side"

The Speedo and Odometer are working? Steering heavy?

You are aware that you must clear ECU error codes after making repairs to see if the fault has been fixed?

Didn’t realize how much info I left out lol Yes whenever I tinker around with it I always reset computer to see if anything has changed.

it’s a 94 Auto. The stuff inside of the connectors is dielectric grease. So when I purchased vehicle from previous owner everything worked on the original cluster except for speedometer. When I first used Nissan data scan I never got a code for speed sensor. Back then the only codes were for vacuum leaks det sensor. After I got through emissions I didn’t see the cel for months.  After a while it became troublesome driving without knowing how fast I’m going so I found a identical cluster from the junkyard that came off of a 93 auto. Once I installed it the speedometer worked but then I finally get code 14. At higher speeds when I take my foot off the gas it almost feels like the car is engine braking or dragging but then once I get back on the  gas pedal it picks back up. It’s been this way since I got it.