I have a 92 Camaro that I put an ls1=t56 combo in...I"m building a turbo now and I am going to need to tune the car using the OBD-II setup from the newer car....I had my wiring harness done at wait4meperformance.com
All wires are run and I have a serial data wire and a check engine light wire just sitting under the dash not hooked to anything...

Can anyone walk me through converting my origional OBD-1 to the newer OBD-II style

I know I will need the actual OBD-II plug but what else will I need.

 

look at the FAQ sticky above, it has the plug layout which is self explanatory. Just rip off a ODB 2 connector from any car and wire it in.