One more electrical demon.....

When I started this job of tackling all of the electrical issues my 70 340 Duster with Rallye Dash had pretty much the headlights and parking lights working and my fuel gauge and temp gauge. I removed the wiring harness and from it removed extra wires that were added but connected to nothing. I replaced the dash pad, added a brake light switch, oil sending unit and a new headlight switch. Oh and a turn signal switch since my emergency flasher knob was broken off and I had no turn signals either.
After re assembling everything and slowly I have gotten to the point where I have my turn signals, brake lights, emergency flashers and all of my factory gauges including the tach working and the dome light too. I have a few remaining problems to overcome. No lights in my dash work, None of the gauges light up, my turn signal indicators, or my high beam indicator. I have a wiring diagram and have tried to figure out what could be at fault and its not going well. I have tried adding a couple of additional grounds and cleaned up the fuse box and bulkhead with wd 40. Oh my horn doesn't work either but I'm thinking that's because I do not have my steering column fully back together with the new to the car Tuff Wheel and the mounting of the column since I've had the gauge cluster out a couple of times to troubleshoot. I also put in new led bulbs in place of the regular 194's that I took out. I don't think my remaining issues are all due to one problem since different circuits are involved. From what I tried to describe does anyone have a better idea than I do what I should be checking? Thanks