I’ve just purchased my first caterham. Within two weeks I changed all the lights to LEDs from JAL. Rear light units, fog, reverse, number plate, wing repeaters and front indicators (and of course the relay). What a difference. All were virtually plug and play and the difference between them and standard are unreal. Worth every single penny. I know there are cheaper alternatives out there but for quality, and ease of figment the JAL ones are worth the extra. Just need to do the headlights now...