Put these in the Landy (or is it the offset pin type - BAZ15D) and they are plug and play:
https://www.car-mod-shop.co.uk/380cree-80-rx2-pair-80w-bay15d-red-1156-380-cree-12v24v-high-power-led-bulbs-stoptail-etc.html
Not cheap but works and are nice and bright but out of stock at the minute...