6 volt AC regulator, replaces Yamaha p/n 498-81910-23, 498-81910-23-00 & 443-81910-60, 443-81910-61, 443-81910-62. If your bike is blowing bulbs the regulator is prime suspect.
Case must have a very good earth. Fits in place of units with two mounting holes. 6 volts, max 10 amps.
Suitable replacement on these models:
XT250 G,H,J, K, KC – 1980-83
XT500 all with 6 volt lighting 1976 on. Fits USA G & H models with CDi
TT600 K,L 1983-84