96 eclipse gsx transmission problem
 

I bought this gsx awd turbo automatic with an engine problem so I went and bought a import dsm engine and transmission. After installation, the car wouldn't start. The import transmission had a different plug which let the computer know that the car is in park, therefore, starting. I tried to change the plug but i hear it's not possible. After that i went and bought an american version of the transmission and everything connect right. the engine started and when i went to put it on drive nothing happens. the car just seats and doesn't move regardless of which gear. I thought the trans was bad so i returned it, then recently i found another trans and install it. After all the hard work am having the same issue and i can't think that two transmissions are bad. Everything is connected properly and car starts but doesn't move, i don't have any check engine or any lights on the dash. Any suggestions or anything i should be looking at to help me fix this issue?