alternators not charging??

Ivw had my alternator tested and it came back that the resistor was broke so that was replaced,

Put it back on started the car to chexk everything was ok and still the alternator isnt charging

So went to a mates who had a spare alternator that we new was fine, put that on it and still no luck

Im not really to clued up on electrics but he seemed to be baffuled as he sed every thing was working how it should and should be putting out around 14volts when running but it wasnt

Anyone have a clue wat might be wrong,

Cheers dan

I have the bosch alternator that is off a mk3 golf, it has a block connector attqched with a two pin connector but ive noticed that the wiring goin to is only has a singal blue wire, should there be another wire for this connector like an earth or summat?

Anyone?

Hi, mate. The blue wire is the field. You don't need, any wires for it to work/charge correctly. 

Wat do u mean the blue wire is the field? I thought that the blue wire sends a signal to summat to tell the alternator to charge? 

On the field wire you "switch on" the alt to charge. everytime when you turn the ignition key to run position. It's an ignition + which comes thru a diode.  So if you connect the charge cable (B+) and give an ign + to the blue wire or D+ point the ALT must work if it good.  Which alt you use?

Lol im sorry mate i didnt really follow that, cud u explain it in stupid terms lol (for me) so i can understand ha ha its the bosh altthats for a mk3 golf

the blue wire from the mk1 loom does run to 1 pin on the 2 pin plug, the other pin is not used

if you look closely at the alternator it may be labelled, the blue wire wants to go to D+