Originally Posted by Felix42
This LED headlight bulb has no control box, albeit a little more expensive:

https://www.ledperf.co.uk/h4-bi-led-bulb-conversion-kit-p-25957.html



£30 cheaper at Classic Car LEDs H4 LED


"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10