I remixed the lamp head for strength and a snug fit. I remixed the backpack to allow for a rocker switch.
All parts are oriented correctly and the correct size, but the Dummy 13 parts must be printed at 250%. You will need supports for all files except the head neck socket and the backpack wire hole cover. I used 3 walls and top/bottom layers with 20% infill. I printed using ASA for strength. The neck socket that snaps into the lamp housing (head) is a tight fit and will need a lot of force to insert.
You will also need some soldering skills to connect the wires to the switch and plug. Printing a base will make the lamp more sturdy.
Here's a link to the switch and GU10 socket:
https://www.amazon.com/dp/B07GVB2P2N?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1
The author remixed this model.
I remixed the lamp ring to allow it to tighten as you twist it. I also beefed up the neck socket that attaches to the head as well as the hole it goes into. In addition, I remixed the backpack to allow for a mini 3A 250v AC mini KCD1 2 Pin 250V 3A 6A Switch (8.5*13.5mm) as well as a wire hole cover that snaps in at the bottom. I extended the backpack peg to fit all the way into the back of the figure for a more snug fit.