300CE Seat Heater F22/1 Fuse Location?

[124Coupe]

I am looking for the location of F22/1, an Auxiliary Fuse Holder for my 1990 300CE's
seat heaters. According to my ETM dated 1986-1992, it's located in the
left rear of the engine compartment however there is no picture and I
can't seem to find it.

I only have the paper manuals and am hoping someone could check the CD
manual or component finder for a better description of its location or better yet, a photo!

Thanks

[95300YDT-A]

W124Coupé,
I have the seat heaters too on my wagon - a W124 300TD turbo of 1990.
There where you say I see a small black box about 1"x1 & 1/2" and 1 & 1/2"
high. Inthere are 2 fuses of 25 A in serie. The lid simply lifts off.
Someone told me it was for a mobil carphone which I toke out.
Well, I think I will try out if it is for the seat heating.
Anyway, it is definitely an MB arrangment but maybe not factory fitted.
Tell me when you find out.
Danny.