I have a 68 camaro and i recently bought an alternator off of ebay. I was going to do the 1 wire thing but thought i will just stick with my 3 wire. Well when my new one came it has 3 wires all right but the plug is not the same.

I bought the right plug from baxters but am not sure which wires to connect together?

Just the 2 smaller wires

If the new alternator has a flat two prong connector then it is an internally regulated alternator. If the alt has a square two wire plug then it is an externally regulated alt.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=PRF%2D30706&N=700+115&autoview=sku

The above link is to an internally regulated alternator.

http://cgi.ebay.com/ebaymotors/GM-DELCAT-HOUSING-ALTERNATOR-REPAIR-HARNESS-NEW_W0QQitemZ200080705112QQcmdZViewItem

The above link is to a harness for an externally regulated alternator

You can easily convert a camaro to use an internal regulated alternator.
There are 2 articles on how to do it in the basics sticky at the top of the electrical forum.

Short version:
Correctly splice on the pigtail connector for the alternator mentioned above.
remove the regulator connector from the regulator.
Install a jumper wire to connect the top and bottom wires on that connector
Install another jumper to connect the middle 2 wires.

They make a prebuilt connector that will plug into the regulator harness connector and do this. Not sure where to find it tho.

ricks got that harness part number 27555 for 20 bux.

Thanks guys. I used the conversion info from this site to get it hooked up.

Tom