Factory alarm goes off when trying to jump the battery
Hello! I've got a 1991 E30 with a dead battery, and when I try to jump it, the factory alarm goes off, preventing the jump from occurring. I then have to wait for the alarm to stop, and then try again, with the same result. There used to be a button under the steering wheel area that would kill the alarm, but it's no longer there, and I believe it was removed (or the wires cut, etc.) during a "repair", so I'm left not knowing how to jump my car. I've read that if they key is in the ignition in the "second position" then that disables the alarm, but it doesn't seem to help.
Would replacing the battery fix the problem? But then again, I believe my battery is still good, so it would be a shame to have to get a new one, when this is such a seemingly minor issue.
Thanks in advance for any ideas!