Amnesia,
I still haven't gotten my rear door popper to work yet. Granted, I haven't spent any time on it since Moab, but the two things that I still need to do are to scrape the paint out from under the ground wire for the solenoid at the back door, and to wire in the horn relay. Moncha's diagram for the factory switch (which I have too) is great, but I don't know how to wire that into the horn relay. I got a quick diagram from Moncha that show's three wires (one wire from ground, through switch to relay, one wire from hot source to relay, and one wire from ground through solenoid to relay) for the installation, but the relay I have has four blades on it, so I don't know what wire goes to what blade on the relay and which blade remains open. This might be easier if I took some pictures and drew some diagrams.
Either way, Moncha's wiring diagram for the switches (above) work. My switch lights up when the dash lights come on and dims when the rest of the dash does. So, I know the switch is wired up right, I just can't get it to fire the solenoid at the back door. I'll keep you up to date as I try and figure things out.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless