i got a battery from the local yamaha dealer and it went dead real soon. i recharged it, and it is starting to go dead again. i was wondering, when i took the battery off and started it, i used a tester to see if the engine was sending any volts back to the battery to see if the engine would recharge the battery itself, but no volts came back! does the 225 recharge the battery? also, does anyone have a wiring diagram for this trike? thanks.