Important: Use this procedure only when suitable test equipment is unavailable.
| • | A vertical centre-line (2) that corresponds to the centre of the vehicle. | 
| • | A horizontal line (1) that corresponds to the centre of the front fog lamp bulb. | 
Important: Use this procedure only when suitable test equipment is unavailable.
| • | A vertical centre-line (3) that corresponds to the centre of the vehicle. | 
| • | Two vertical lines (2 and 4), corresponding to the centre of the driving lamp bulb on each side of the centre line (3). | 
| • | A horizontal line (1) that corresponds to the centre of the driving lamp bulb. | 
Important: Use this procedure only when suitable test equipment is unavailable.
| • | A vertical centre-line (3) that corresponds to the centre of the vehicle. | 
| • | Two vertical lines (2 and 4), corresponding to the centre of the front fog lamp bulb on each side of the centre-line (3). | 
| • | A horizontal line (1) that corresponds to the centre of the front fog lamp bulb. |