question about 3 wire alternator.

just a regular stock alt. need to know where the wires go altho i think i have it figured out. from what i've read up the there is a plug with a brown wire and a red and the red wire isnt connected to anything. but the brown wire is going into the cab. from what i can gather the brown wire is going to a idiot light or buzzer or something. and the red wire goes through a fused link to the key switch. then the big post obviously goes to the battery.

right or wrong?

1. You should have one large red (10 gauge or so) wire. This is the main power wire that goes directly to the battery. Make sure it is a heavy gauge since it has to carry the full output of the alternator (up to 100 amps).

2. The second wire, probably brown goes to a switched power source. This is the field wire that energizes the alternator. It must be switched, or else it will drain the battery overnight. Do not wire this into the coil power wire that you use to switch the engine on and off (a seemingly elegant solution), since once the engine is running the alternator will feed power back through this wire, which will then power the coil, and you won't be able to shut your car off.

3. The last wire is the lead for the sensing wire that goes to the idiot light in your instrument panel.

good to know when I install my new high output alternator!

alright, thats what i thought! thanks
oh and my main power wire coming from it is 4 gauge.
you cant build a car and not do the big 3!