Red interior light

[ChevySSR]

I have this nifty puck of a red/blue light on the headliner, but it does not turn on with the side switch.
how should I go about figuring out which left over wires are from that light?
I could not find this information in the SSV supplement.

(I tried removing the light to see which wires are on the back, but the screws did not want to come out).

thank you for the help!

 

[ChevySSR]

update: I applied 12V to all the blunt cuts left for me by the seller, in a hope to power on the red ceiling light, at times I heard clicks, under the dash and in the engine compartment, but the light did not power on.
I'll need to do more snooping to find the wires going to it. I might repurpose the wire going to where the roof light used to be.