Mercedes w123 – 280E (1977) – USA Version – fuse box diagram
| Fuse | Ampere rating [A] | Colour | Description |
| a | 16 | red | Power windows a front right/rear left |
| b | 16 | red | Power windows a front left/rear right |
| c | 16 | red | Auxiliary fan |
| 25 | blue | Auxiliary heating | |
| d | 16 | red | Sliding roof |
| 1 | 8 | white | Parking/tail lights right, license plate/instrument/hazard warning switch/heater and ventilation controls/(rocker switches, shift indicator), illumination, side marker lamps |
| 2 | 8 | white | Standing light left and right, clock, trunk light, roof light front and rear, hazard warning system, warning monitor term. SF, (automatic anenna) |
| 3 | 8 | white | Parking/tail light left |
| 4 | 8 | white | Cigar lighter, glove compartmentlight |
| 16 | red | Radio, seat heating front | |
| 5 | 8 | white | Air conditioning compressor switch over valve idle stabilization |
| 6 | 16 | red | Windshield wiper and washer, optical horn |
| 7 | 8 | white | High beam right, high beam indicator |
| 8 | 16 | red | Heated rear window |
| 25 | blue | Seat heating rear | |
| 9 | 8 | white | High beam left |
| 10 | 16 | red | Blower motor |
| 11 | 16 | red | Low beam right, fog light |
| 12 | 8 | white | Stop lamp, turn signal lamp, instrument cluster, relay auxiliary fan term. 86, (relay power window term. 86 cruise control) |
| 13 | 8 | white | Low beam left |
| 14 | 8 | white | Back-up lamp, carburetor heater, idle cut-off valves, emission control, warning monitor term. 15, automatic transmission, horn, (fanfares) |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.