I'm having one of those days...
It started our great - sunny, planned to spend some time with the rover outside... all was bliss. In fact, I got a lot done. I adjusted the timing to help my idle issue, I wired up the work lamp in the rear, and I even wired up the rear window defogger (yeah, one of many additions from the PO). So I've got the dash pulled out and the side (where the heat controls are) opened. Lots wires!
Thats where things turn a turn for the worse. Everything was fine, I had the work lamp on for about 10 minutes and thought, might as well start 'er up for a while to get some current flowing. I noticed the temp gauge was reading cold and wanted to see if my timing adjustments effected a cold start.
I noticed the red charge light was on (this is important), hopped in and went to turn the key - nothing. No charge light, no power, nothing.
In fact, everything in the dash is dead. I have a switch that controls an electric radiator fan - its not keyed (on the ignition switch) and will run without the key in the truck, the fan wont work.
I'm sure its not the battery, its still putting out 12v and things that are not part of the dash, IE the work light which is wired to a fuse block under the hood, are working fine.
I checked all the fuses I could find - under the steering wheel and on the block mounted on top of the clutch master under the hood. One under the hood was burnt out, but here's the kicker, it didn't have a positive lead to it anyway. I'm guessing it had been burnt out for some time, part of a previous mission. It was a 25 amp and I thew in a 35amp (all I had) to make sure.
So what on earth could I have done to kill almost the entire electrical system? I checked the leads to the ignition - can't really reach them but could see that they were still attached.