Backup LEDs for 2015-2020 Subaru WRX (Pair) XPR (720 Lumens) Diode Dynamics Subaru you must use an LED

you must use an LED bulb as incandescent bulbs (like stock) require too much power

solid state LEDs

Mazda 3s and Sonatas: Coincidentally

the cheap alternatives do not use a UV-coated PC lens and that will become obvious

They can also be wired for use as the intense mode only if that's what you want

Backup LEDs for 2015-2020 Subaru WRX (Pair) XPR (720 Lumens) Diode Dynamics Subaru you must use an LEDUpgrade. Add more light output and a modern appearance to your backup lights with the 921 XPR backup bulb. Each of the four sides of this bulb is populated with 4 high power LED chips for maximum brightness. Housed in an aluminum casing with a textured finish for superior heatsinking properties the XPR will last for years to come. Best of all installation only takes minutes simply take out your factory bulb and the XPR will fit snugly in the socket.