Telephone wall jack

Did the old wall jack work before you removed it?
Are the wires still connected or do you remember where the wires used to go.
If so, then what I would do, is with a phone connected, start disconnecting 1 wire at a time. When the line goes dead, then you know that is one of the wires that you need to use. Reconnect that wire, and mark it, and Keep doing this until you find the other wire that makes the line go dead.
Then you will know which 2 wires you will need to get the jack working.
Usually, the standard color wires that you need for the new jack is Red and Green for a single line phone jack.
Hope this helps.
Good luck.
Mac