Recently I have posted on issues regarding my 82 300e, regarding erractic idle, cutting off, hard to crank, replacement of OVP relay, etc. Was researching and found some interesting post regarding OEM alarm system. If the Alarm was tampered with like during Stereo Installation, can it have symptoms described earlier. Need help on this one, this one has me stumped. In addition, to be sure, how can you test Alarm system to see if it works. Thanks in advanced!!