Does anybody know which wires do what exactly?

I just did the splicing yesterday. Had great video and the microphone is working but the speaker isn't. Does anybody know which wires do what exactly?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0