Electrical Problems HELP!

[GTJamie]

Hey Guys, I Have a 1998 Legacy B4 RSK (automatic), the stereo has been playing up and coming on at night, and giving me flat batterys, i tidied up some of the previous owners wiring, but it still comes on and it turns my sub on too. after replacing the battery it killed, it wouldnt start, so i jumpstarted it, and it started, then i drove it for about half an hour, turned it off, and it wouldnt turn back on, so i put the battery on the charger over night and it still wont start.

now when i try and start it, the fuel pump primes, the stereo comes on in the ACC position but not in the ON position, and there are no lights coming up on the dash EXCEPT the usual self check lights (ABS, POWER mode, Battery Light, CEL) since its not running. but the red dials are not showing up.

if anyone has any ideas please let me know, i\'d be very thankful!

Thanks, GTJamie

[Roo]

Has it got a turbo timer?

[GTJamie]

Nope. Just a boost gauge. otherwise its stock standard.

[GTJamie]

It WAS going. after trying a few times i have got it started, went and got petrol, now im back as square 1.

when it wants to go, everything is fine.

but when it doesn\'t want to go, i get these symptoms:

Clicking from what sounds like a relay, clicking about once a second (it just clicks in the same pattern as the "door open but key in ignition" dinging sound)

when that clicking from what i think is a relay starts happening, the doors open lights on dash are very dim and the ACC and ON positions have no affect on anything, however, my stereo flashes like its having a seisure.

about to pull stereo out and have a look at wiring, but i dont think thats the problem.

ALSO: everything is stock standard. the only "mods" are STi genome axleback exhaust, aftermarket head unit installed by previous owner, and the sub installed by me.

Thanks, GTJamie

[Roo]

Bad earth? How clean are the battery terminals?

[GTJamie]

Sorry, The Positive Terminal Had Some Plastic Over It

Case Closed, Thanks Guys