1972 C10 dome light removal?

[ratman90]

PO installed a new dome light kit. Chrome base, clear lenses and all.
Looks nice. Went to install an LED bulb, and found the wires were wrapped around the end of the bulb amd then snapped in? Wth?

I want to remedy this and attach the wires to the housing correctly, but how does the housing come off? I see no screws?

If it helps, they also installed a cargo light that is powered off the dome light. No manual switch. Dome light comes on, so does the cargo light.
Errg!