alternator problems

hey guys I swapped out my alternator (what a pain!) and put int he refurbished one, but it still isnt recharging battery. sometimes my car decides not even to start!!! anyways, im going to take it back to the ppl who refurbished it asap, but can anyone send me a wiring diagram for a 1990 240sx? i mean the diagram for hte alternator, jsut to make sure the problem isnt on hooking it back up =) thanks guys