I am fitting a lot of additional electrical accessories to this car as described in the other topics in this section and am having to add quite a bit of additional wiring and fuses to protect the circuits. The car originally has a 12-way fuse box tucked under the dashboard on the left hand side in both left and right hand drive versions. This was supplemented by a number of torpedo fuses around the car: three under the rear seat in the Variant for the Eberspächer heater and rear window demister, and one clipped to the engine for the reversing lights. For the Fastback, these were all in the engine compartment. I am adding a few more for my extras.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Side lights | Headlights | Headlights | Side lights | Always live | X | Ignition switched | |||||
| Side lights left | Side lights right | Low beam left | Low beam right | High beam left | High beam right | Licence plate light | Emergency light system Interior light |
Electric fuel pump† Cigar lighter Heating* |
Fresh air fan Wiper motor Heated rear window* Temperature regulating switch* |
Turn signals Dash warning lamps |
Horn Brake lights & dual circuit warning lamp‡ |
| * switch current | † LE model | ‡ where fitted |
Additional torpedo fuses:
| Under rear seat: | In engine compartment: |
| Heater main current (16A) Heater overheating current (8A) Heated rear window main current (8A) |
Reversing lights (under clip) (8A) |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Side lights | Headlights | Headlights | Side lights | Always live | X | Ignition switched | |||||
| Side lights left | Side lights right | Low beam left | Low beam right | High beam left | High beam right | Licence plate lights Rear fog lights |
Emergency light system Interior lights Radio Electric aerial Alarm activation signal relays |
Cigar lighter Heating* Central locking Hood and tailgate releases Sunroof auto-close relay |
Fresh air fan Wiper motor Heated rear window* Temperature regulating switch* |
Turn signals Dash warning lamps Oil temp gauge Sunroof* Radio* Sat-Nav |
Horn Brake lights & dual circuit warning lamp |
* switch current
Additional torpedo fuses:
| Under rear seat: | In engine compartment: | By main fusebox under dashboard: |
| Heater main current (16A) Heater overheating current (8A) Heated rear window main current (8A) |
Reversing lights (under clip) (8A) | Always live: Electric windows auto-lifter module (25A) Sunroof (25A) Ignition switched: Electric windows (25A) |
The Omega K9 alarm has three modern blade fuses pre-wired in the loom: 1 at 15A for input and 2 at 10A for output to the interior light and the side lights. I have decided to accept these for simplicity. I am using the alarm signal output to flash the indicators instead of the side lights as Omega intended. The fused 10A output would feed the car’s own indicators (7A total) but would be overloaded if a trailer was attached (10.5A), so I have added a couple of standard after-market relays to take the load and keep the circuits seperated.
The headlights were originally wired with the outer pair as the dipped beam and side lights and the inner pair as the main beam, only one pair was on at a time. The full current was switched by the light switch from the X contact on the ignition switch, thus the headlights are only on when the engine is running. Soon after I bought the Variant, I added another relay to eliminate the voltage drop through these switches. I also arranged for the dipped beams to stay on when selecting main beam – all the better to see my way!
I have renewed the original Hella headlight units which have been superseded. My local Hella dealer investigated for me and they came up with revised part numbers of 1K3 114 155-001 for the high beam and 1M3 114 178-001 for the dipped beam with sidelight. There is one snag, they didn’t have the brass earth terminal fitted but they did have the cast-in stump. So I needed to recover the earth terminal from each of the old units to transfer to the new ones and then carefully peen over the head of the casting to secure it.
To be continued . . .