108 Fuse Map
1. Dome light, parking light, clock, passing signal, map light, glove compartment light. 8amp
2. Windshield wiper and washer, horn, cigar lighter. 25amp
3. (no discription). 8amp
4. Fuel pump. 8amp
5. Turn Signal indicator, back-up lights, fuel gauge, stop light, hand brake, warning light. 8amp
6. Heater Blower, automatic starting aid. 25amp
7. Tail light right, parking light right, license plate light right, dash board lighting, trunk light. 8amp
8. Tail light left, parking light left, license plate light left, fog lights right and left. 8amp
9. Head lights high beam right and indicator. 8amp
10. Head lights highbeam left. 8amp
11. Low beam right. 8amp
12. Low beam left. 8amp
From
http://electric.articles.mbz.org/108fuses/
I'm sure #3 has a description... just dunno what!
Also for fuses under the hood:
electric sliding roof drive: 25A
Heated rear window: 16A
Electric window lifters: 2x 16A
Air conditioner: 16A
Additional fan (280 SE 4.5 / 280 SEL 4.5): 16A
Automatic aerial: 8A
Radio: 2A
From page 48 of the owner's manual.