The PO installed this in my w124. Sounds fine, but every time the car is turned off all the audio and radio settings disappear and have to be reentered after the car is restarted. I can't believe it was designed like this. Installation instructions say that a permanent power source (yellow wire?) was to be connected. Did the installer do something wrong, and how can I correct this? 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)

Check and see what the yellow (constant power) wire is connected to. It is probably connected to the Cigarrette lighter (which is switched with the key). Try hooking to an always on power source (such as at the hazard light switch.)

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-Matt

EPA Section 609 Certified MVAC Technician
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Oil Burner Kartel Member #10

Ahh the smell of Diesel Fuel, it's like coffee in the morning!

My Car:

1982 300SD Turbo Diesel (231,500 miles!) RIP

1984 300SD Turbo Diesel Custom (235,500 mi on driveline.) - On Road!!

www.icsrepair.com

thanks, do you know which one of the mb harness wires is the constant power source, if any, since I imagine that would be an easier connection.

__________________
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)