Finally got around to matching up your 108 to my 107 fuse map (1972 350/450SL). Too bad, it's not in the same order and it seems the grouping is off as well. My German chart doesn't give the fuse ratings and the owners manual doesn't either. With the help of the altavista translator I came up with the list below.

But what is "einstieglouchten"? Could it be the interior entrance lights?

Fuse#1, Term30: (automatic antenna)
2, 30 standing light, clock
trunk light
glove compartment light
"einstieglouchten"
hazard warning light
3, 30 (radio)
4, 30 passing light
5, 15 windshield wiper
windshield washer pump
horn
cigar lighter
**6, 56 side mark*? on the english side and german side is blank but in fact it's for my radio**
7, 15 blower-motor
8, 15 turn-signal
back-up light
combination instrument (kombi-instrument)
9, 15 (electrically operated
fan
air-conditioner)
10, 15 stop lamp
starter relay
11, 15 (rear window heater)
12, 15 (automatic transmission)
13, 58 tail light right
parking light right
license plate light
dash board lighting
14, 15 master relay
fuel feed pump relay
15, 58 fog light
16, 58parking light left
tail light left
17, 56a 18, 56a head light high beam
right
head light high beam
indicator
18, 56a head light high beam
left
19, 56B low beam right
20, 56B low beam left

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1972 450SL
1982 300D Turbo