2002 Yamaha xvs1100 w/ 21,000 miles. I commute 40miles a day and has served me well for up to 19,000 miles. After that I've been having charging problems. Bike starts in the morning and 20 miles later battery is dead. Not enough juice to fire her up 8hrs later. Found it was a bad regulator rectifier. replaced it and all good for the pass few months. Same symptoms is back again and left me stranded at work. Got a jump start and rode the bike home. Didnt shut it off and metered the battery and got 10v idling @ around 1200rpm. Let bike sit a few hours and not enough juice to start bike so charged battery to 13+v and bike started right up. Whipped out the multimeter and here's what I get.
Battery holds charge @ 12.7v cold (Checked first thing in the morning)
Bike starts right up and meters at 13.8v at idle and rises to 14.6v when idle is raised to 5000rpm.
Stator = 23V/AC @ approx 1000rpm idle and voltage increases up to 60VAC when idle raised to 5000+rpm when measured all three wires from stator.
Regulator / Rectifier
Test A) Pos multimeter lead to pos wire on r/r + neg multimeter lead to all three white r/r wires = all 0 reading on multimeter.
Test B) Pos m/m lead to neg on r/r + neg mm lead to all 3 white wires = .336, .334, .336
Test C) Neg multimeter lead to pos wire on r/r + Pos multimeter lead to all three white r/r wires = all 0 reading on multimeter.
Test D) Neg multimeter lead to Neg wire on r/r + Pos multimeter lead to all three white r/r wires = all 0 reading on multimeter.
Please analyze and let me know if I should use this bike as a boat anchor. Also, be advised that new replacement r/r was a cheapo from China and had to splice original harness
I know but I plan on getting a new harness and also all factory or better parts if anyone can recommend a reliable source for Quality electronics. So, please analyze and let me know what yall think.