r/Fixxit • u/Littlemandigger • 11h ago
Yamaha R1 rn01 1999, regulator
Bought this bike 2 months ago, battery diyed 2 times so I assumed it's regulator, removed tank and regulator and yes one wire is fried. So I bought another one cheap (left, 3rd pic) and also MOSFET FH020AA (right 3rd pic, bigger one) and I'll try this time with the MOSFET FH020AA, I have to cut wires anyways.
I'm just wondering why this happened? Why the wire gone this bad? Is it solely regulator issue or should I be afraid there's something wrong with alternator? If it's important, I'm pretty sure old regulator was also cheap version, not the original one.