Sorry... I figured everybody only cared about '87!
Actually, now that I've dug into this, I'm not even sure.
It's the Pathfinder '97 edition. It comes with manuals that says it works on '79-'93, and '89-'97. I'm concerned now because unless you don't need a cartridge for the earlier cars, I think it might only work on '89-'97. Hopefully you understand this better than me as I thought for sure it worked on the earlier cars. I can e-mail OTC and find out if you're not sure either.