Originally Posted by
Ginge !
fan belt is on then, the blue wire is connected so now test the voltage with the engine running, should be 13.8ish then turn on aircon, lights on full beam, stereo, heaters and see the voltage should remain about the same, goes to 12v or below then its the alternator
thanks for the help i will test it then if its the alt then i will get a new i hope they not dear tho