This might be getting into territory Im not familiar with if it ends up being anything with the ignition circuitry BUT, how much have you tested the starter/power when ignition is turned on?
If youre certain the starter is good. You should be able to test to make sure its getting power by using your multimeter and putting the pos on the terminal coming from battery and grounding the neg on the body. You should read a current there no matter what. Then after confirming that, change the pos to the other terminal going from the start solenoid to the start motor and keeping the ground in its place and then having a buddy try and start up the car. if you dont see anything there then i would suspect a bad solenoid on the starter OR there is something wrong with the wiring from the ignition.
Hopefully there are some people more experienced with the ignition that can jump if everything else checks out.
I guess one more test would be if you get the same power readings on the last step without the ignition on. While I dont think that should show anything, Id be interested if it does.i get 12v at the positive terminal of starter, and 12v at the relay terminal of starter when the key is turned to start. So it would appear my wiring and relay are good, yeah?
WORKING PROBLEM SESOLVED: Replaced ground from battery and power to starter. Cleaned off contacts at all grounding locations. Replaced Starter (and heat shield) with known good used starter from local contact and everything fires up right away, even after driving which i would sometimes have issues with.
All weird electrical stuff has gone away, remote FOBS work again. My rpms still dont work but i get that from the Ultragauge anyways.
Thanks for everyones help!