Help! I Fried something

Field shorted in the alternator. Now wiring time in the bulkhead connector.
What worked for me, while I installed battery in trunk: soldered together am peter wires and put in voltmeter., and got the main wire out of the bulkhead, and brand new Advanced alt. Iwired alt straight to the battery.Then( I dunno), moved battery and reran the alt to trunk battery. Fired it up; 18 volts. Checked the grounds, good. Bought a new volt regulator. 18 volts. Took the alternator to local shop.Tested, one field shorted; then he asked me "where was the blue and green wires hooked?" I said that they were backwards, as is doesn't matter.,
He said, " Correct, but if you had them hooked correctly, with the field wire that was grounded, you would be tearing the dash out, and replacing all the wires. Then I explained how I wired in a 4 wire cut-off switch,and bypassed the dash. He liked that.
the moral of the story is: ditch the alt wire going into the bulkhead box, install a voltmeter, run the alternator wire, under the hood, straight to the battery.