[dannymarilyn]

Any basic alternator has a positive output connection, and a connection to power the stator. On many alternators the positive connection for the stator is internal and usually tied to the positive output post. The alternator output ground is usually the alternator frame which grounds to the engine through the mounting bracket.

However, the Penntex appears to isolate the stator positive output connection -orange wire.

Most alternators are regulated by varing the field winding (field) - blue wire according to the Penntex pdf.

Red wire is battery voltage. Alternators HAVE to have power to develop electricity!

Brown is "regulator exciter voltage" which probably means "on and off". This prevents battery drain.

So, if you have voltage on the blue wire ( 3-10 volts), voltage on your orange wire powering the stator, and no output, alternator is probably defective. That assumes everything is properly grounded. If no voltage on the wires, defect is elsewhere.

Just be careful if measuring around a running engine at the rear of the alternator. If a voltage is missing at alternator, then check at regulator. Bad wires or connections are difficult to trace. Do not assume a connection! Verify.

Good luck,
Danny