Bmw3 no charge from alternator have put new alternator on

Is your alternator actually charging? If you are not getting power into your alternator it will not put power out.

you didnt check for a fusable link on the wire to the altInater??

Is the battery light on the dash board working? If the light does not work the alternator will not charge, it needs the power from the light to energise the rotor.

Has the battery been checked to see if it is good?

An alternator cannot charge a bad battery

Check for fuse and or give it a direct ground from the battery terminal and see what happens it should charge 14+V

Replace the large wire on the back of the alternator,with a new one,it comes off the back to the positive side of the battery,leave the old one on the alternator.

1.You need to install a Fully charged battery, before you install a new alternator. Otherwise it will burn the alternator up.

2.I read what you typed about installing a new battery. Was the new battery fully charged, and was it installed before the new alternator?
No?
See number 1 above.

Find a friend with a heated garage that you can use first off, then locate the short that may be causing all this. Unless you have a bad battery? If its more than 3 years old, replace it. Batterys are cheap. WALMART has em under 89 bucks for most vehicles.

change your battery cables and check all wires on the alternator for loose connections, expecially the grounds.