Jim, since you have experience with the back side of a dash, when you get a chance swing over and look at mine
. I wired it back in 1994 and don't remember everything. What a mess of wires. OK, not really a mess, but I don't remember what A and B are. At least the new gauges has a complete wiring harness, I just have to get the old "harness" out.
Oh, and removing the dash in a pain in the butt. Em prepped the steering column so it is painted at least. I should make a boot for the pedal box while the dash is out to keep the air that flows over the headers from hitting your legs. It can get a bit..warm.