Changing the alternator on different vehicles I've noticed how some vehicles have different alternator wiring setups (beside the B+ terminal.) The most common alternator will use the [Pulse - Lamp - Field Monitor - Sense] wiring to get the alternator to work and adjust to load demand, but some of these vehicles will either use 1 or three of these connectors for the alternator to work. P is almost unused. Toyota's I've worked on use a 3 wire terminal (L-F-S). On most GM's it's either 1 wire (L) or 2 wire (L-F) but some guys add a 3rd wire (S) as a remote sense to the battery for combat dimming lights under load. One BMW e46 I replaced the alternator only has one wire to the connector. So how does the alternator adjust to load demand, especially those 1 or 2 wire alts without sense wiring.