Motorcycle Repair: Regulator, regulator rectifier, ground resistance

Question
I have been having a charging problem with my 1986 Kawasaki LTD454. I have replaced the battery, but even the new battery dies after 3 to 4 hours of use. My husband and I have troubleshot the charging system by fully re-charging the battery and checking the voltage at 4000 rpm. It was not bringing the battery up to 14 to 15 volts. It was still an almost flat 12.5 volts. We then checked the altenator, and it checked out OK at 60 volts. The last thing that we checked was the voltage regulator. We Ohm'd out the connection from the white/red wire to three yellow wires and got a consistent 3.25 across the wires, and then the second check was suppose to be a black/? against the same yellow wires. They should have checked out a minimum of 10 times the first reading. They all Ohm'd out to infinity. Can I assume that my regulator is bad?  

Answer
Hi Lou Ann,

Basically, with diodes in rectifiers you should have current flow one direction, and no current flow the opposite direction. There should be no current leaks to ground. Resistance values will vary between VOM's used to measure Ohms.

The regulator/rectifier is in my opinion, the defective component.

Respectfully,
Mark Shively