Review on 🚗 HOTSYSTEM 1156 1141 LED Light Bulbs DC12V 7506 P21W BA15S 18-5050SMD for Car RV SUV Camper Trailer Trunk Interior Reversing Backup Tail Turn Signal Corner Parking Side Marker Lights - Pack of 10, White LEDs by Billy Braggs

I only needed one more bulb and my favorite bulbs only sell in packs of 4 for $20 which is $5 per bulb (SRRB bulbs, warm white). They're only $2.50 each and come in a 2-pack. That's the main reason I bought them, aside from the fact that they're listed as 'warm white'. Compared to SRRB, they are significantly worse. They aren't as bright, they don't have a protective "bulb" (the LED emitters are wet and open) and the warm white light color is much colder than SRRB. But they're cheap and I only needed one, so they'll work fine, especially since I'm using a bulb on the outside of the RV and the SRRB on the inside. I have a spare bulb in case it dies prematurely. Additional notes on warm white. They're definitely a warmer white, but not as warm as the SRRB. I can't remember if SRRBs are sold with a high CRI (more accurate color reproduction), but it was pretty clear to the naked eye that SRRBs are much more accurate in color than the Hotsystem brand. I put them aside. - two lamps next to the cabin lamp. I almost always loathe cool white light, but especially when camping. I'll update this review once we actually go camping, especially with other RVs, and can better compare if our external Hotsystem lightbulb is putting out too much cold blue light for me to live with. First world problems, I know!