Alternator Pulsing

on my 70 dart i had a similar prob it mainly pulsed above idle .i am in the process of putting in a new wire harness[aftermarket].and i found two wires slightly melted together right at the inside side of the bulkhead connector.i am not even sure this is where my problem was but it seems very possible to me. i tried other alternators,regulators,and bypassing and could not find the problem otherwise. good luck