Re: lookin for some help
`Welcome..... if your 89 originally came with a 5 speed, it would not have had a 350. That combination was not available that year. If it still has the original console in it, there is a tag inside the compartment that lists all the RPO codes for that car. Sometimes they get rubbed off over the years and can be hard to read. If you can read them do a Goggle search for "GM RPO codes" and you will find a few sites that list them. You can then decode the car. If it's a true IROC, it will have a Z28 code.
I have a Chiltons Repair Manual for 82-92 Camaro that has wiring diagrams in it. You may find the info you need in one of them.
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