I've tried cheap LED's and they are cheap for a reason, ie they are rubbish. The one's i've used in the TVR's and Landy are around £15-18 each and have lasted well. They have also fitted with no issue. I've just put some rear indicator bulbs in the TVR, as the lights are way brighter than the indicator, and they are really good - bright and do not flash faster without any need to change wiring/relays etc.Fitted LED bulbs in std fittings, mostly a waste of time, thiey either got water i and failed. Also the stop tail ones only work with a live on the stop or tail, if they get a live on both they go out. fine in modern cars where the stop switch cuts the tail but useless on a series and cost me hours of trying to work out what was going on.
indicator bulbs: https://www.aliexpress.com/item/4pc...6.html?spm=a2g0s.13010208.99999999.263.pBJfvP
stop/tail (although I think the pins are opposite and at the same height which I think is bulb 1156, not 1157 shown here, but can't see the 1156 anymore?: https://www.car-mod-shop.co.uk/380c...ree-12v24v-high-power-led-bulbs-stoptail.html