"On 2016 CX-5 with LED lightings, the front turn-signal/parking/side-marker lights use 7444NA amber dual-filament incandescent bulb. The rear turn-signal lights use 7440NA amber single-filament incandescent bulb. Be aware that the spec in our owner's manual for rear turn signal lights is wrong as it says 7443NA; and 7443 is a dual-filament bulb!"
Here is an alternative mod on front turn signals if you don't want hyper-flashing or adding the resistors for LED replacement: