light holder that goes inside the lower part of the pillars on the FLSUN Super Racer.

fits 10mm wide strips

cut the strip with 2x3 LEDs for each groove (that should be 10cm long each)
insert the strips by sliding them inside the grooves.
bend the start and the end of the strips.
slide into the lower parts of the pillars (see pictures)
when half inserted, solder as needed (put 2 strips in series if you have 12V strips, everything in parallel for 24V strips.)
the light diffuser is optional, you just need a 1mm thick PMMA plate, cut it 80*53mm, and secure it with 2 diffuser holders (snap fit in the pillar.)

If you want a switch, you can use my other thing "FLSUN SR switch" : https://www.thingiverse.com/thing:5241993