Electrical & Audio Guides
Different types of bulbs used on Fiesta's:
| Picture | Type | Description / Common Use |
|---|---|---|
 |
H3 | Single filament 55w - Spotlights & foglights. |
 |
H4 | Twin filament 55w/60w - Headlights. |
 |
BA15s - BS382 | 12v 21w single filament single pip - Indicators, reversing lights & rear foglights. |
 |
BAY15d - BS380 | 12v 5w/21w twin filament double pip - Brake lights. |
 |
BA15s - BS207 | 12v 10w single filament single pip - Interior light & number plate light. |
 |
T3 1/4" - 10mm | 12v 5w single filament wedge - Sidelights (not Mk1), side indicators & boot light. 12v 1.3w or 2.6w single filament wedge - Instrument cluser and dashboard illumination. |
 |
SV 8.5-8 - BS239 | 12v 5w single filament tube - some boot lights, some glove box lights & foot well lights. |
 |
BA9s - BS233 | 12v 4w single filament single pip - glove box light and Mk1 sidelights. |
 |
Ford Mini-Twist | 12v 1.4w single filament twist clip - some dashboard illumination, some Ford radio illumination & clock illumination. |
