@ graingerblaze, those LED lights? I bought some a few months ago, only fitted them a few weeks back & one failed very quickly. (I did get my money back from the seller).
They are very cheap but I liked the size of them, quite neat compared to what I've had on the bike for a few years. I was going to ask if anyone has them fitted & was I just unlucky in having it fail so quickly, it seems not!
The fact that your last set lasted three years though gives me hope & I might try another pair, if they last 18 months at £12 that's not too bad? Plus I have a spare one now to replace a dodgy one if necessary.