GU29703800 Fits V50, V50 II. V50 III, Monza, V65C, V65SP, V65TT, Lario, V7 Sport, 750S, S3, 850T, T3, T4, T5, Convert, G5, 1000SP, SP II, SP III, California II, 850 LeMans, LeMans II, LeMans III, LeMans 1000 all years LeMans IV and LeMans V.
Solid state adjustable voltage regulator for Bosch alternator systems as used by Guzzi from 1972-1992. Direct plug and play, accepts existing 3 prong plug and mounting points. Trim screw allows you to fine tune your maximum charge rate. 14.3 volt factory setpoint.
This regulator is a favorite of owners whose bikes get little highway running to keep a topped up battery. Also Convert owners who run at lower RPMs, and riders with multiple electric devices or lighting.
Minute adjustment of the trim pot makes for significant changes in charge voltage, installation is accomplished with carefull attention to voltmeter readings while adjusting.
This adjustable regulator can be substituted for 17703800 or 29703800
Also suitable for BMW "Airhead" R series Bosch charging systems, BMW numbers 12321350052 and 12321244409