Circuit Breaker on Ammeter Bypass

If you don't know about 'ol Mark and his automotive electrical web page, you should check it out. It's got all kinds of lovely diagrams and everything. Read through it, it's good stuff. You will see what to do with your alternator wiring and the ammeter bypass.

http://www.madelectrical.com/electricaltech/amp-gauges.shtml

BTW, the Denso alt I have works great. Plenty of power for any accessory you can throw at it, lightweight and easy to wire. Its' internally regulated so you get to ditch the OE voltage regulator and associated wiring.

Case in point; a buddy of mine had his rusty old Dodge here at my house recently to take care of a few things. While working on it, I was looking in the trunk for something and noticed there were like 3 or 4 voltage regulators floating around in there. Wonder why.

Also, I worked at a dealership, we jump started cars almost every day, never a problem with feeding too much voltage back into a battery. All of 'em had 120A alternators or better. The jump packs we used can pack a punch too. Alternators usually have a diode or series of diodes that act like a check valve to prevent unwanted voltage from being pushed through the circuit. The regulator senses the magnetic field caused by the extra current and shunts the extra voltage or something like that. They fail when you try to do stupid crap like reverse the polarity of the jumper cables.