amp meter bypass...?

Most of the guys here do put the two connections together as the wiring is about 40 years old and the ammeter is crap anyway I have also put a different alternator on my barracuda the output wires go straight to the battery and not through the dash/ammeter I have had no problems with it apart from the ammeter shows discharge and not charge .I have also fitted a voltmeter and temp and oil pressure gauge under the dash