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I am not familiar with your car, but sounds like you got something hot grounding out, possibly to the body or possibly taped to a ground. In my 70 Challenger, if a tail light or indicator light came loose (which frequently happened, cause I drove it like Daisy Duke) and shorted to the body, the car would shutdown, and not start again until I traced the escaping light bulb down.
The "static machine gun tapping" sounds like a selinoid clicking. The selenoid is like a current router. Three of those things you mentioned in your list pose problem areas, and if there were wires on the air box, check them also. The rear markers, fuse box, and horn button have hots that potentailly could prevent the car from starting and drain out your juice.
If you have an intermittent sucking/blowing sound, did you have that before, cause you played with the "airbox" and maybe it's new electrical connection is incorrect or insufficient and is draining the juice.
I've also seen in a non-saab car, where there was not suppose to be a ground situation in the fuse box, but one developed behind the box to the firewall and cause the same non-starting, try finding that short :<).
A bad battery can be tested by charging it to full capacity and then placing it under a load for a few minutes and watchin a meter reading, 2 volt per battery cell, so if it is charged to 12.85 to start, then under load it tests a 10, there is a dead cell. A bad battery will cause the alternator to always charge, or over charge (kinda like filling a bucket with a hole in the bottom) and eventually kill your alternator.
Seems to me you got a short draining your battery fast. I had a problem in a non-saab car, where I had a short, but couldn't tell where it was, just when I turned on the lights the interior dash would blow and the fuse would blow. I could never keep the fuse hot long enough to trace the short. When you get to that situation, there is the "aluminum foil fuse smoke test", which is scary but sometimes necessary, but you may be able to see your short without all the fireworks if you have someone else seeking hard and try it with the lights off.
Good luck, and may the Force be with You.
posted by 205.188.192...
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