I switched all mine out with these. 20x Warm White T10 921 194 RV Trailer 42 SMD 12V Backup Reverse LED Lights Bulbs | eBay
These are warm white 4000-4500 kelvin. (Easy on the eyes, like incandescent)
These have 42 led's per light so they are not as bright as 921's but close. If you want brighter lights go with the 68-SMD'S.
I had 3 that blinked, the seller replaced no charge. These must be polarity sensitive, put some in one way did not work, flipped them over and worked fine. Very cool burning lights, low watt no heat.
As far as brand...they all come from China and are rebranded.