96 Contour with 4 cyl. Charge light came on and drove it about 80 miles home. Advance Autopart tested alternator. only putting out 5 Volts. Replaced brushes Alternator now putting out 15 V. reinstalled alternator. Charge light still on. Had battery tested. Charge was low so they recharged and tested fine. Still have that charge light on. Voltage of 12V across the batt at idle or revving engine. Disconnected heavy feed from alternator and measured voltage from feed to battery negative. solid 12V.
What am I missing?
3 wire harness, white spade, heavy feed, and smaller black wire that was mounted on same post as heavy feed are all mounted and secure.