What are the 4 terminals on an alternator?

S terminal – Senses battery voltage.
IG terminal – Ignition switch that turns the voltage regulator on.
L terminal – Closes the circuit to the warning lamp.
B terminal – Main alternator output terminal (connected to the battery)
F terminal – Full-field bypass for regulator.

What gauge wire should I use for my alternator?

Re: gauge of wire for Alternator to battery? Six or eight gauge, minimum.

What does S and L mean on an alternator?

On the back side of the alternator you’ll find several terminals (or connecting points in an electrical circuit). Let’s take a look at those: S terminal – Senses battery voltage. L terminal – Closes the circuit to the warning lamp. B terminal – Main alternator output terminal (connected to the battery)

What are the two wires on a GM alternator?

The 10- and 12-SI units use a different two-wire connector plug on the rear of the alternator. The Number 1 wire on the 10- or 12-SI is connected to the charge warning light on the dash. The Number 2 wire is what is called the voltage sensing wire.

Where do you connect the alternator sense wire?

If installing an alternator with Remote Sense capabilities in a vehicle that does not have a Remote Sense line, connect a fused (5 Amp) insulated wire from the Alternator Remote Sense terminal to the positive (+) battery terminal or the common distribution point such as the starter solenoid battery (+) terminal.

What gauge battery cable should I use?

As far as standards go, a 6-gauge AWG cable has a 50-amp capacity and is 11.8 feet long. A 4-gauge AWG cable has a 100-amp capacity and is 9.4 feet long. A 2-gauge AWG cable has a 150-amp capacity and is 10 feet long. A 1-gauge AWG cable has a 200-amp capacity and a cable length of 9.4 feet.

What kind of wiring do you need for a Denso alternator?

Alternator wiring varies on the type of Denso alternator fitted in your car, but it Denso: Alternators · Westfield World: Wiring a Nippon Denso Alternator · Basic. Nippondenso Alternator Wiring Diagram Tagged nippondenso alternator wiring diagram, wiring diagram for nippondenso alternator,at.

How many wires do you need for an alternator?

Alternator wiring varies, but there’s usually either three or four wires to connect. Alternator wiring varies on the type of Denso alternator fitted in your car, but it Denso: Alternators · Westfield World: Wiring a Nippon Denso Alternator · Basic.

What are the three terminals on an alternator?

The three terminals are marked on the right side of the alternator nameplate as ” P, IG, L”. “P” (red wire) is a frequency pulse that is used as a feed-back signal for tachs or automatic frequency control on a generator set.