No interior electronics until starting/revving my car?

okay so last night i went out at night to start my car and when i opened my door, no lights turned on or anything. I thought i must have forgotten to reconnect the battery from earlier but decided to start it anyways lol.

i turn the key and i hear the fuel pump priming. the engine starts up like nothing is even wrong, though here's the catch: nothing inside works. No tach, no dash lights, no ding from having the door open, cant turn on my headlights, no brake lights, no turning lights, not a single thing works except for AC? hahaha. So i gave her a quick rev and everything turns on: my headlights come on, tach comes up to RPMs, etc.

Anybody ever experience this on their cars before???

..... wtf 0_o, loose connection somewhere?

i went to pick it up last night (got towed) and on the way home it died. So i pulled over and jump started it with my dads Mazda6 and it ran amazingly for another couple of miles, then it died again. I had to do this a couple times on the way home, this led me to believe the alternator wasn't charging so i bought a new one this morning and threw it on. It still wasnt charging and everything is still the same way it was. Voltage is still spiking and everything still flickers whenever i turn something on.

Gotta be a loose connection

Check the positive cable at the battery.  Lots of reports of electrical problems associated with the stuff hooked to the cable at the battery terminal.

yeah must have been one of those because i went out and pushed in every last relay and fusible i could find and just like that everything went back to normal. thanks a lot dudes!

Still have that horrible misfire that only gets worse as i drive the car more, but my coil is also kinda melted soooo haha im changing that one out tomorrow and going from there.