Mitsubishi FTO alternator wiring problem?NEED HELP ASAP THNX

[scarfacetm1984]

I've got some problems with Mitsubishi FTO alternator wiring.Put new alternator belt,new battery but alternator not charging.got myself a multimeter checked that values don't change car on or off value is 11.8 on 12.4 off.connected multimeter to alternator's positive and negative wires with car running and got values off 2.5-4.7 from alternator so i presume its not alternator but can't figure out what is it, fuse seems ok,wiring probably but have no idea what wiring should i test,can anyone help me out on what and how this problem can be solved,thanks

[RockShox]

11.8 on 12.4 off.... you're probably getting the voltage difference from your battery only without power from the alternator. You could have got a bad new alternator.
Assuming your 80amps main fuse is ok.