[mreid]

It is easy to install a one-wire in place of what you have. You can even leave the voltage regulator installed if you like the look. Disconnect, insulate, and stow all wires currently connected to the alternator. Any new alternator over 100 amps should include a new power lead of at least 10 gauge. Run this from the alternator to the battery side of the solenoid.

Now for the bad news. Your alternator light will be on all the time unless you run the "I" connection wire from the regulator to the correct pin on the new alternator. (Most Powermasters include the instructions for how to do this). But the really bad news is, you cannot use your ammeter and must replace it with a voltmeter or modify it to handle the new high current.