GM Alternators

Leverage what is simple and works best. I would prefer a modern Nippondenso alternator, like I see on my later Mopars (2002 newest), indeed most cars today. They output amazing current for the small size and replacement brush kits are easy. Some have an internal Vreg, but my Mopars still use an external Vreg, which moved inside the engine controller in the 1980's. When that circuit fails, Dodge truck owners install a 1970's Vreg rather than change the controller. For my old Mopars, I would prefer an internal Vreg for simplicity, but don't know what brackets and pulleys are available.

Some GM alternators are strange. My 1985 M-B uses a GM-type Bosch alternator, which many term "Motorola-style". Like a 1970-80's GM, it has an internal Vreg which must "boot-up" its power generator. That comes via the small current in a dash bulb. Indeed, my Owner's Manual says that if the dash bulb doesn't light on key-on, drive immediately to the dealership (for emergency bulb replacement) since the alternator won't be charging. Since I changed to LED bulbs, they don't give enough boot-up current, but when I rev over 1000 rpm the alternator boots-up due to residual magnetism (once aged). I know this all sounds bizarre to a Mopar guy, so google-check before you fuss I'm wrong.