It would be helpful if you gave us a bit more info by explaining in more detail what the problems are. In the absence of that, I’ll take a stab at it.
The speaker connector connects from the top of the connector as opposed to sliding into the connector from the side. Take a look at Step 37 of this [guide|11614|guide|stepid=34016] and note the comment in red: ''Make sure to pry underneath the connector.''
Let us know if your problem is something different.