15-02-12, 10:55 AM
Your battery/alternator tester is a simplified voltmeter and, from those results, I don't think you need to worry about replacing the battery.
However, the whole of the wiring sounds as if it needs a thorough going over.
Disconnect the battery before you start. Then once you've sorted out the handlebar switchgear, lift the tank and open the connector housing. Unplug each of the connectors in turn. Check for signs of overheating, clean, retighten any spades that feel loose and finally spray with WD40 to keep corrosion at bay.
Check connections to the starter relay etc. are tight and don't forget the earthy side that goes to the frame and engine. Finally reconnect the battery and grease the terminals with battery grease/Vaseline.
That should chase the electrical gremlins away.
At least Yamaha use decent quality wiring, both the Kawasakis I previously owned suffered from porous insulation and I had to replace entire lengths of cable because the copper had turned to green paste inside them.
However, the whole of the wiring sounds as if it needs a thorough going over.
Disconnect the battery before you start. Then once you've sorted out the handlebar switchgear, lift the tank and open the connector housing. Unplug each of the connectors in turn. Check for signs of overheating, clean, retighten any spades that feel loose and finally spray with WD40 to keep corrosion at bay.
Check connections to the starter relay etc. are tight and don't forget the earthy side that goes to the frame and engine. Finally reconnect the battery and grease the terminals with battery grease/Vaseline.
That should chase the electrical gremlins away.
At least Yamaha use decent quality wiring, both the Kawasakis I previously owned suffered from porous insulation and I had to replace entire lengths of cable because the copper had turned to green paste inside them.