David, I have the same issue. I assume the f i computer you referenced is the larger of the two behind the battery. I recall reading about this mod before in the posts, and I thought it was suggested to find the purple wire beneath the fuses. Where is the best location to find and ground this purple wire, given that the amount of space usually is very tight. Thanks.

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87 300e (white/black; amg body kit)
88 300ce (red/cream; amg body kit)
93 300ce cabrio (white/blue/blue top)
93 300ce cabrio (black/grey/black top)
98 ml 320 (totaled @ 137,000 miles)
99 clk320 (black/grey/black top)