42, The meaning of life
Join Date: Jul 2009
Location: Melbourne, Australia
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Welcome to the Werkz.
If you charge the battery and connect it to the car, does it discharge on its own fairly quickly, or is there a near zero drain on it when the car is turned off?
If you connect a test lead to the output of the alternator (not the cars harness) and start the car, does it produce 12 - 14 volts as expected?
The lead that goes from the alternator to the battery should not go to ground, if it does, the battery will drain quickly and probably spark when you connect it to the car.
Check the insulation along the wire and the jumper post (if you have that on your motor)
Riding in style