need higher output alt in my wagon, 1 wire or stock??

[PT Sportwagon]

I am needing a higher output Alternator in my 71 Sportwagon. I am adding some more to the electrical system so the factory one won't cut it anymore, plus I think it is on the way out.
I have seen that a 1 wire alt is cost less, but how hard is it to switch? Mine is a 3 wire, and have not seen many 3 wire higher output Alts.

Tim

[MonzaRacer]

What engine are you running? Buick or other GM.
I prefer to run the CSI 144 alternator, try crossing an old AC Delco number 321-411, this is a an 120-140 amp alternator, Ill dig up my plug and post up the pinouts I used. You can simply wire these into the stock wiring.
Up grade to 8gauge wire from alternator to battery, On the S terminal you simply loop it to ALT battery post.
F terminal run it to a hot in run output with a 20 amp fuse.
Then the L terminal should run from a charge indicator light with a 20amp fuse inline. The digital regulator is awesome I used to sell these with small frame starter for large flywheel sbc/bbc , GM bolts and alternator plug for 349.99 no core but lost source, but now may have source for both items through AC Delco. Ifyou want an alternator/plug, pm me.
Lee Abel
AFTERMARKET PERFORMANCE

[recklessnova]

How high amps do you need? I run a 93 amp alt 84 hi output camaro with the 305 and air
have it in two cars it runs about 80-100 bucks depending on where you get it and can be had with a lifetime replacement
check out mad electrical it goes into a ton of reasons to not run a 1 wire
also Lots of more information on the cs style alts
Josh

[BK2LIFE]

there are plenty of aftermarket one wire, and three wire alts out there. check the audio forums. i had a 250 amp gm style stock altenator a few years back

[6'9"Witha69]

Stick with the 3 wire. I run a 12SI in my '69. Many use CS series as well. As suggested check www.madelectrical.com for cross references on CS and SI alternators.