Charging problem cause?

Nice to see they didn't brush it off as "Customer Error", and refuse to refund your money. There are still a few companies that believe in customer service.

It's possible, but have you tried doing a resistance check using a multimeter? How's the output voltage look?

Here's how to check voltage and resistance of the alternator:

Fully charge the battery, as this will be the power source with the alternator out of circuit, and position a fan for engine cooling. Start the engine and let it get to operating temperature. Get someone to help, as holding the throttle, and using the multimeter at the same time is a bit difficult.

See what the three YELLOW wire combinations(or any alternator output wires)at 4000 rpm's (1-3, 2-3 & 1-2). The output will be around 50 Volts A.C.(Alternating Current). BE CAREFUL, AS THERE IS A SHOCK HAZARD HERE!!

If any of the combinations are low or non-existent, the stator(wire windings) are bad and must be replaced.Some of the older Z1’s and KZ900’s were reported to be phase sensitive, so check the wire colors carefully.

Using an OHMETER, Check the three wire combinations again, looking for a reading of 0.36 - 0.54 OHMS. If the readings are above or below, the stator may be bad and need replacement. Also check from any of the three YELLOW wires to ground, this will show if arcing took place. Check only with the engine off !!

August 1, 2013 received refund. Electrex expedited this with efficiency and courtesy.