my oem alternator for e300-24 is a 90 amp but got busted twice on its diodes but since the reliability of a replaced diode lasts only for at most 2 years and still experiencing low voltage, ive decided to upgrade it to 120v since there are no modifications needed. but with the upgraded alternator, i still have low voltage problem with full load, thus the modification was suggested by my electrician which at first im hesitant of having it done.

i have a 90 vw golf with similar bosch alternator with also similar problem, and also planning to have this modification soon.

tnx