Rick’s Motorsport Electrics offers this Lithium Ion compatible rectifier-regulator that is designed with a lower voltage set point to work with lithium ion batteries.
A plug-n-play piece for Yamaha OE#’s 2J2-81960-A1-00, 2J2-81960-A0-00 and 4L0-81960-A0-0. *Rick’s design eliminates the black signal wire and also has different dimensions than the OE piece: 3 1/2″ x 3 1/2″ x 1″.
Fits: > Yamaha: 78-81 SR500