Strange Electrical Problem, everything kinda works. Options

[YksKrad]

Okay this is very strange to me.

My battery completely drained about a week ago because I left my running lights on in the garage and didn't come back for 4 days from camping.

Now the strange part. I used this as a reason to by an Orbital battery, and when I tried to turn on my 914 I didn't get that delightfull hum of my electric fuel pump and my starter did nothing.
okay so now I'm pissed because electrical anything isn't my strong point. Last time I have to do wireing of anything I ended up with a burnt thumb.

So I decide to see what else is working/not working.

I flip my left blinker on. The signal comes on but doesn't blink.... I do the same with the right with the same result... it comes on but doesn't blink. I try the hazzrds and they do the same thing. I turn the radio on. It's face lights come on and the speakers crackel as it gets power, but it doesn't play music?
I try my lights... The running lights come on, but my headlights won't come up.

I scanned my fuses and didn't see any missing/burnt Though I should prolley check again.

This pisses me off because I just got the damn thing running like a top (a slightly rich top, but a top non the less) and then this happens, and once again the thing is sitting in the garage.

More info on the car.
It's a 76 with a 2.0 converted from FI to a single weber carb with an electric fuel pump.
Any help/sympathy is appreciated. I am by no means a mechanic and have no clue where to start looking for the problem(s) let allone fixing them.

Once again thank you all