76 model
spent the evening pulling fuses to figure what's what. it appears that in the fuse pics i posted in another thread, the cracked crappy cover should basically match...except for two things. radio (easy to understand because an aftermarket was put in, so god only knows how they wired it) and ignition. i appear to not have an ignition fuse anymore. i pulled each fuse (one at a time) and the cruiser started every time (truck also has many aftermarket ignition items).
still no water gauge that i can tell, but i did get the turn signals to work after hitting the hazard switch. found the fuse for the turn signals/hazards, now mysteriously, the hazard switch stopped working

. all i can figure is that when i had the dash out to swap stereos and fix tailgate switch, i caused a disturbance in the hazard/turn wiring at the hazard switch. so, i'll see if i can get a cluster from the junkyard in case the gauge is crap, and i'll pull the hazard switch, scrape the contacts and coat with dielectric grease and hope that fixes it.
fwiw, this is what i've found to be my fuse panel setup.
from left cowl,
tail/rear markers
horn
stereo/cig lighter
wipers
gauges/htr
tailgate switch/turn signals/hazard
unknown
headlights
still need to check to see where domelight and front marker lights are wired in, and, of course, figure out how to fuse my ignition. going to study up on a couple of wiring diagrams tomorrow.