THAT should give you most if not all of the info you need to test, properly, for an 86. The diagnostic port is different on your truck, compared to mine. Mine is behind the Fuse-Box in the engine bay, connected to it. Yours is on the driver side, located in the fender. Big Yellow plug. So, on some of the tests, I'm not sure how you'd test. But, you can read the prongs above(ECU schematic) and see if it's the same, IDENTICAL to the 85 FSM you're going off of. Remember what I said about having your meter at the right settings too, ya know? I'm pullin for ya, TB! I might have other pics of pages you might want to test....if you don't see what you need there, above. Just post back and I'll see if I have it, ok?