Serlock_nz
Its a freaking diode man. I was the electrical knowledge guy that helped jimx fix his spoiler light. From a rough memory the diodes are grouped together that the forward voltage drop on them is enough so you dont need to worry about dropping the voltage.
Lets just say that jimx's haev been running fine for at least 12 months and leds blow pretty fast when you put 12v or higher through them.
Cheers
Bombster