1 wire from battery negative to chassis 1 wire from battery positive to alternator 1 wire from motor to chassis
go with at least 4 gauge when doing this. i would suggest doing it 2/0 ga or even 1/0 ga. then if you ever decide to upgrade amplifiers etc this one less thing you'll have to do
oh and it just depends on where everything is. if your alternator is near your battery or at least visible with the hood open, (fu*king saturn) then it should be a snap.
i'm looking forward to doing a wonderful big 3 on my girlfriends car. i can't even see the alternator. i think this is because geniuses at saturn decided it should be on the bottom of the motor