Bad electric problem....

I'm new here, so i try anything cause i'm stuck bad........325 I '90...Yesterday, i've found the problem with my right (2door) electric window, the connector between the door itself, and the body, underneat the rubber was so rusty that i had to bypass few wires, welded, and everything work just fine afterword, even the electric mirror....So at night drove a bit and the mirror stop working, like before, but window is still great...Did'n bother too much,..I tought so....This afternoon, the battery was almost completely drain, boost the car and it work fine, everything except mirrors....So i did few tests, found a drain in my electrical system, remove fuse one by one, did nothing, but if i remove the fuses 16 to 30 and the relay K7, the short is gone...So i've managed to look undes dash on my side, and seems that the alarm was faulty, unplugget it, same old shit.......Now i've put everything back in place, except relay k7, and i got no more courtesy light inside when door open, no more trunk light, OBC completely dead, no reading, and of course, the heater blower dont work, (cause the k7 relay)......But even so, if i put back the relay, same old shit.....I did manage to put back all the fuses, no short at all, except when i put the fuc/$/% K7 relay, then it drain...Also there a relay cliking under dash on my side when i put it...(k7)...There a kind of a white track with 3 relay on it, a white, a green and an orange, close to the speaker..WHAT ARE THEY FOR????.........
Thanks in advance, i know ain't easy foud that kinna problem trough internet, but it worth a try....:rolleyes:

I'm so stupid sometimes....Yesterday, fucking around with relay K7, i manage to open it to see inside that relay, little job since it just a tiny yello plastic cover....Seem's like new, so i put the plastic cover back....BIG MISTAKE.......There all my problems started, but it was unoticeable, the car was just like regular, but when i put that crappy cover back, i didn't notice that inside, there a little plastic edge, and put on the opposite side, it manage to put the relay on OPEN position...So it drain the battery overnight....YES,,,,A BIG mistake from me, but well, aren't wee all learn that way?....:frown:
So.....If you ever have any questions about electric, my girlfriend is here to help you...lolll:tongue: ...And she a super babe too...loll...I think i'll mary her, or first issue, as long as i got my bimmer....:dogpile:
Long life to all....
Serge....

good luck man!