I have LED's like these in our Casita's fixtures including outdoor "porch", backup and front
light.
5 X Car Festoon T10 BA9S White LED 48SMD Panel Interior Dome Map Light Bulb Lamp | eBay
With flat panels all LED's are pointing outward, with round bulbs half are pointing inward.
Only problem we've had is the included double sided tape lets loose with heat.
3m automotive trim tape works great.
I tried "warm" (yellowish) ones but we prefer a version of white, "Daylight" maybe, between warm and cool
where you want more light you can put two panels in a fixture.