Pre-airflow (1963-1965) Lotus Cortina
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Airflow (1965-1966) Lotus Cortina
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Early MKII (1967-1968) Lotus Cortina
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1969-1970 MKII Right Hand Drive
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1969-1970 MKII Left Hand Drive
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Key for 1969-1970 MKII RHD and LHD Wiring Diagrams
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| Code | Item | Code | Item | |
| 1 | R.H. Side Lamp (Front) | 40 | Instrument Illumiation Bulb | |
| 2 | L.H. Side Lamp (Front) | 42 | Generator Warning Light | |
| 3 | R.H. Direction Indicator (Front) | 44 | Instrument Voltage Stabilizer | |
| 4 | L.H. Direction Indicator (Front) | 45 | Speedometer | |
| 5 | R.H. Headlamp | 46 | Tachometer | |
| 6 | L.H. Headlamp | 47 | Clock | |
| 7 | R.H. Front Loom Connector | 48 | Turn Signal Unit | |
| 8 | L.H. Front Loom Connector | 53 | Heater Switch | |
| 10 | Temperature Gauge Sender Unit | 54 | Cigar Lighter | |
| 11 | Coil | 55 | Windscreen Wiper Switch | |
| 12 | Distributor | 56 | Steering Column Connector | |
| 13 | Starter Motor | 59 | Panel Light Switch | |
| 14 | Generator | 61 | Lighting Switch | |
| 15 | Body Earth | 62 | Interior Light | |
| 16 | Battery | 63 | Turn Signal Switch | |
| 17 | Horn | 64 | Horn Switch | |
| 18 | Fuses | 65 | Column Dip Switch | |
| 19 | Regulator | 66 | Headlamp Flasher Switch | |
| 20 | R.H. Bulkhead Multi-Way Connector | 67 | Fuel Tank Sender Unit | |
| 21 | L.H. Bulkhead Multi-Way Connector | 69 | Rear Wiring Connector | |
| 22 | Starter Motor Solenoid | 70 | R.H. Stop Lamp | |
| 24 | Blower Motor Ballast Resistor | 71 | L.H. Stop Lamp | |
| 25 | Heater Motor | 72 | R.H. Direction Indicator (Rear) | |
| 26 | Back-up Lamp Switch (Manual Transmission) | 73 | L.H. Direction Indicator (Rear) | |
| 28 | Windscreen Wiper Motor | 74 | R.H. Side Lamp (Rear) | |
| 29 | Stop Lamp Switch | 75 | L.H Side Lamp (Rear) | |
| 31 | R.H. Courtesy Light Switch | 76 | R.H. Reversing Lamp (where fitted) | |
| 32 | L.H. Courtesy Light Switch | 77 | L.H. Reversing Lamp (where fitted) | |
| 33 | R.H. Indicator Warning Light | 78 | License Plate Lamp | |
| 34 | L.H. Indicator Warning Light | 79 | Rod Lamp Relay (where fitted) | |
| 35 | Ignition Switch | 80 | Tachometer Earth | |
| 36 | Ammeter | 81 | Speedometer Earth | |
| 37 | Oil Pressure Gauge | 82 | Main Beam Warning Light | |
| 38 | Temperature Gauge | 83 | R.H. Road Lamp (where fitted) | |
| 39 | Fuel Gauge | 84 | R.H. Road Lamp (where fitted) |
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