Ldo Voron trident D stealthburner lights

[Mickfb]

Printer Model

LDO VORON TRIDENT

Extruder Type

Clockwork 2

Cooling Type

Stealthburner

Hi. I am in the process of building the LDO Voron Trident. I have reached the stage of building the Stealthburner. The instructions show installing led lights but I do not appear to have them in the kit. Are these an optional and have to source them myself.
Many thanks