[ndnchf]

High current flow will cause faster point wear. If the generator's 3rd brush is set to high output for continuous use of headlights etc., then one can expect faster wear.

That being said, I have installed focused beam LED headlights, and LED taillights. The 3rd brush of my generator is set to its LOWEST output setting. This gives me a 4-5 amp output on the ammeter with headlights OFF. With the headlights ON, I still get a slight positive charge on the ammeter. So for either day or night driving, I never need to change the 3rd brush setting. For me, this is best combination. Great lights, minimal generator output, which means less heat and wear on components. Under these conditions, a cleaned and serviced cutout with good points should last for a long time.