The amp on my 1990 2.5 300D Turbo went out last summer.

A trip to the U-Pull-It yielded the amp from a 1988 300E. Sold to me for $8.00 as a "Fan Relay Black Box", even though I told the cashier what it was.

According to FastLane, the 1988 300D used one of two different CC Amps. The one I seem to have is identical to P5002-63658, which is also used by the 1990 300D 2.5 Turbo.

It has 2 rows of 7 pins on the right side and has a small black device plugged into it with the numbers 03 88 / 007 545 12 32 / VDO 519.201/1/1/14
on it. This device has two rows of three pins each.

However, the numbers stamped on this device are entirely different.

These read 09/88
12V
412 212/1/1
(MB tristar) Mercedes Benz
005 545 05 32

There is also a blue stamp , an irregular hexagon with the numbers 528 09/88 in it.

I am aware that it is probable that in the 17 years since this thing left Sindlefingen, it has probably dies just as my 15 years one CC Amp died, and I therefore should consider resoldering it.

However, do any of you experienced MB techies know why the numbers stampre on this part do not correspond to the numbers given on FastLane?

I greatly appreciate your valued opinion and response.

__________________
Semibodacious Transmogrifications a Specialty

1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)

"Time flies like and arrow, yet fruit flies like a banana"
---Marx (Groucho)