Alternator upgrade

[280EZRider]

Will installing a 65A regulator on a W123 55A alternator increase the amperage, or does the alternator itself need to be changed to gain the increase?

[mercmad6.3]

It's easier to fit the larger amp alternator because it has larger field coils. It bolts in . Make sure the red power cable is in good condition though,that extra 30 amps will fry the connections pretty quickly if they are the least bit dodgy..

[barry123400]

Alternator output amps is a function of the alternator not the regulator. The regulator basically just controls whatever output the alternator was designed to delliver.