The Light Linker rollout in a render kernel's Attributes limits and controls illuminating an object's light sources (figure 1).
Figure 1: Light Linker rollout
The Light Linker rollout provides check-boxes for up to eight light pass layers in addition to special lighting features like sun light from a SunSky system or Environment lighting. You can set these check-boxes to enable or disable lights associated with them.
Scene lights are linked to the Light Linker Light Passes from the Light Pass ID attribute in a light source's Attribute Editor window (figure 2).
Figure 2: Setting the Light Pass ID for a scene light