1976 Camaro base w/factory sbc 305 w/th350 console shifter. Long tube headers. Changed my transmission filter and speedo bullet Saturday, took the car for a test run; no issues or leaks other than pcv valve came out of passenger valve cover (need a different size grommet as came with faux and functional breathers and added pcv later when switched to demon 625) and parked at home. Started again just to make sure nothing crazy had happened-started fine. Went out Sunday and fixed a broken send (trunk grommet w/brown wire) to my gas gauge (which was pegged past full). Went to start the car and nothing. No crank, no click, no start. Put on the headlights, tried to crank; no dim and my gen, oil, and temp dummy lights all lit when I turn the key. Tried in Neutral and Park=nothing. Tried holding brake pedal and key while cycling through gears=nothing. Grabbed a screwdriver and jumped the positive on the starter solenoid which took off and spun so I know I've got power.from the battery. Everything else in the car works-lights, radio, dash, seat belt light EXCEPT now my vent blower motor doesn't come on in any position. AC has been off car for years, but normally the blower motor kicks on and limps along whenever the key is turned to ON. Wondering if; 1) neutral safety switch is out? 2) starter solenoid is out? 3) some thing is out of alignment in the console shifter since I had to remove the trans pan and the push the attached drivers side linkage out of the way to get the pan out/in and it's ancient/may have stretched and isn't actually "all the way" in park. 4)something ignition related in the column before the starter? Car shifted up and down with no issues and has the stock ratchet shifter th350 and Long tube headers. Factory AC but was taken off by previous owner 30 years ago. It's been sitting awhile while I was stationed overseas, but I got it back on the road and driveable two weeks ago so it was fully functional and on the road 3 or 4 times before this issue. I was seeing the Gen light kick on but chalked it up to a loose alternator belt which went away after the car warmed up. Car has brand new battery. Any ideas?