Had a problem with the voltage regulator awhile back so bought a replacement and it was as bad as the old one I was replacing. I figured it was time to fix it once and for all. I have lots of Ford parts so I set out to adapt it to the landcruiser. They used the same regulator from the 60s to the 80s so they are available everywhere.It was really very easy, no cutting of the stock wiring or anything. I had the regulator and the terminal strip so all I had to buy was the plug at 3.99. Now I get a constant 13.8 volts at the battery with no headlight dimming even with both heater fans running at idle. Wish I had done it years ago. I used this schematic for wiring.