This is the thing though, isn't the bulb failure warning system more than handy? I thought it was a legal requirement. How do modern systems facilitate this? You could leave the original rear indicator bulb and replace the white reverse light with an led amber white switchback, appropriately wired which would lead to two indicator bulbs at the rear which I believe to be U.K. legal, the lowish current of the led hopefully only making a small difference to the speed and thus kept in required range. Notwithstanding in most cases we fit LEDs to our cars in the U. K. they are technically illegal.
I think it is about time we had some sensible led legislation that would enable our cars to be legally upgraded. Modern cars now seem like Belisha beacons when lit up which alongside our standard lights arguably renders our cars vulnerable supercass