This queston should be easy to answer. I am buying a 95 lt1 for my 94, and I need the opti for it. I heard that I need a different wiring harness then too, is that true? I haven't even looked at it yet, so I don't know if there are wires going to the opti or not, besides the plug wires. Thanks for any help.

 

You probably need to browse this page .

 

Since the engine is a 95, do I need the vacuum harness, and distributor harness? Where can I get those? And does a new opti come with the wiring harness?