DV;
I have a had a little expirience with one-wire alternators;here goes,bought the PowerMaster for around 150 bucks,lasted a few months,regulator was faulty,burnt up,produced 22 volts,burnt up the MSD box,sent it back at my expense,they checked it out,called me to tell me the voltage regulator was "faulty" and they would fix it for me FREE and have it back to me in five working days,they refused to pay for the MSD box........Five days turned out to be three weeks,so I went to Auto-Zone,bought the el-cheapo 19.95,60 amp,stock Ford unit,lifetime warranty,went to the local alternator shop bought the voltage regulator for 39.95,installed in two minutes,had the guy test it,it tested perfect,been on my car now over five years and 20,000+ miles,no problems,PowerMaster still in the box as they sent it back to me,sitting on the shelf..........
The voltage regualtor is a small silver little box about the size of a book of paper matches that screws on the back of the alternator and has three little wires coming out that go on the back of the alternator,instructions with the voltage regulator,even I got it right on the first try,one big red wire comes off the back of the alternator to the battery side of the starter selonoid,that's it.......BTW,when you start the engine the alternator WILL NOT start charging right off,it takes anywhere from 1500 to 2400 rpms before it "excites" or "turns on" depending on your pulley size,with my stock pulleys it comes on at 1500 rpms,with underdrive pulleys you may have to blip it to 2200 to 2400 rpms,once it is on,it will now charge at any rpm...........I can not remember which ones,but I know they sell the regulators in some of the Mustang magazines.....
Since my car is a 65 Mustang,and all I have is an electric radiator fan,am/fm/cassette,and MSD box the 60 amp has been more than enough..........I'll try to post some pics tomorrow....
Hope this helps..........
David