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An "OBD2 scanner" doesn't work on a '95, because '95 is not OBD2. Therefore, you'd need a scan tool compatible with what is now known as "OBD1". They tend to be more expensive, and need a different adapter/connector for every brand of vehicle since there's dozens of proprietary connector bodies on the vehicles. Every manufacturer used a different style of connnector. GM alone had several depending on application. A decent scan tool will work with GM products from 1980 1/2, onward to the limit of their software--often post-2000, perhaps all the way to 2024. Mine goes up to 2007, but since I don't own a vehicle newer than 2003, I'm all set.

EXACTLY the same way you'd connect to any other vehicle with a diagnostic connector. '95 is no different in that regard. Find a compatible scan tool, use the correct adapter, connect it to the diagnostic connector. You may need to supply "12 volt" power to the scan tool via a cigarette-lighter power adapter or similar. Follow the instructions for the scan tool to type in the VIN number or whatever it takes to make the tool "talk" to the on-board computer. Guys get all weird about pre-OBD2 vehicles and scan tools. No need. Just use a DECENT scan tool, and it'll work out just fine. If you use a craptastic "code reader", or some consumer-grade bottom-feeder junk tool, you can expect it to be useless or worse, problematic.

Cam is in, got engine bay cleaned up and wires wrapped a little better, exhaust painted aswell