Need help.. Alternator problem..

Jan 2, 2013
Kuala Lumpur
i just change my alternator.. the recent one k.o already..
but after the change it become overvoltage.. (15v ++)
if not mistaken the idle on between 13.5 to 14.5 v..
so, what is the problem now and how to fix it..
the alternator is ok when testing on others car..
my friends said i need to jump one wire from alternator to abttery.. but he forget which wire.. hehe.

thanks.. :)