[Joe Bob]

Take a pic and post it it....or look to see it has terminals labeled B+ and says Bosch or whatever. Below is what Pelican uses for a pic......but not confirmed. Fits 75-81. Mine was an 83 and now a 93 motor.....so I can't go look in the garage.....



$36.25 and in stock....

http://www.pelicanparts.com/cgi-bin/smart/more_info.cgi?pn=911-603-206-13-M260&catalog_description=Voltage%20Regulator%2C%20exter nal%20%28for%20Marchal%2055W%20Alternator%29%2C%20 %20911%2F911%20Turbo%20%20%281975-81%29