Electrical Short, car wont start and more

kay, i was adjusting my HIDs, and they shut off for some weird reason, so i go and turn the lights off (inside the car), and then back on, nothing. i try to start the car thinking it may be the battery, but i notice my radar detector is acting like its shorting out, then i notice the car wont start and half the lights on the gauge cluster go out, so i let off the brake, and they come back on each time i push the brake they go off. so i disconnect everything extra i've added from the batter POS terminal, and stick the key in to ACCI, everything seems fine, i go to ACCII, and everything halfway turns off and seems to be shorting out. so i turn on my highbeams (only ones connected) and they are DIM as crap. i hit the brakes, and everything goes dim or goes off, same with door locks and windows :confused: :confused: :confused:

(also earlier i relocated my shock sensor on my compustar)

someone HELP, i have some kind of electrical short thats killing my car.
what i've added electronics wise from oldest to most recent
Police strobes (i know i know)
engine ground wires
Pioneer DVD/TV headunit
k-pro
compustar 2wss-as
HIDs

i've disconnected everything from the battery, unplugged everything from my alarm brain, and all accessory modules of it.
and now when i turn the key to ACCI the radio comes on, goes off, comes on goes off. when i turn the key to ACC-II the ecu clicks very rapidly.

if i try to start the car everything goes dim or shuts off, but i hear nothing from the starter (as if its not even trying) and thus it wont start

yeah the battery is good. went out to try it again this morning. now in ACC 1 keyslot, the radio turns on, but only the stock bose woofer makes any noise. and in ACC 2 key position, i hear a rapid clicking from under the hood and the gauge lights blink at the same speed

some kind of bad relay maybe?

gonna steal my GFs battery when she gets home from work and try it i guess. i'll let u guys know

and thanks a lot for the input

Or it could be a problem with the ignition line. You said you shorted something under the dash right? If thats the case then it sounds like there is an issue on the ignition line on the car. Check under the hood for big ass fuses or fusable links.

went out there about 5mins after the last post, and she started right up.... i dont know why, but i'm just very happy. but now half of my alarm is ripped out, so i get to reinstall parts of that again.