I haven't done it myself, but you might need to tap into the existing wiring or use an auxiliary light kit. You can check local regulations and consulting a professional could help ensure a safe install.
Thanks. I've been in touch with Geelyevs.com to see if they have plans to introduce as an aftermarket upgrade. They are now investigating but nothing imminent. I can buy a kit from reversee.com that would require the tap into the existing wiring as you suggest.