Dash lights will not turn off!! 72 dart

Just got done fixing the burnt wires and got my bulkhead connectors in, got everything ran and so far everything is good I did the parallel circuit but ran the 2nd wire from the output of the alternator to battery + I know the ammeter won't be as accurate I used a 4 gauge wire I tested the battery with my multimeter and it tested at 15.3v on the terminals, cannot keep it running for long yet because the compressor pulley is acting up