I was in the process of doing that for my Soul EV, but kind of lost interest, because I can't seem to find the time to continue the project.
Needless to say, purchased a fog light kit from ebay.https://www.ebay.com/itm/Xenon-Halogen- ... 2904487481
Then I went to my local plumbing supply store and purchased 2 sets of threaded PVC piping. (I think it was 3 inches in size) https://www.amazon.com/Genova-Products- ... 17&sr=8-30
Then I drilled some holes to attach the lamps to he outside of the PVC piping, and that's as far as I got...
Next step would be to install the lamps in position and install the light switch and wiring.