I've noticed that truck manufactures offer alternators with different outputs. Can anyone please explain to me why a truck owner might want, or have the need, for an alternator that has these higher o...
You definitely don't need more alternator for winch. Don't know what rating my 1999 F450 had, but I had 8000lb winch on it and I was pulling 10,000lb equipment with it on high flatbed without starting the engine. The dual batteries would drag the forklift with front plate scraping the concrete at the approach and still have enough reserve for engine starting. And that was 7.3 powerstroke who on cold start would run on batteries for few minutes to protect glow plugs from high charging voltage.