First, I recommend you buy the switch to turn it on and off because if you don’t, the only way to turn the marquee off will be to unplug the unit every time but DIYretroarcade does sell the switch so do yourself a favor and buy it!
In order for your installation to look great I highly recommend you remove your entire existing marquee first before applying all the adhesive material needed to make look great first. Drill your hole first to see where your wire will fit before removing the existing marquee then once that’s done, remove your marquee.
I’m a graphic designer so I used a graphics
squeegee to apply the reflective coating so it came out great. Then apply the rest as instructed. You want to make sure your LED light strip is fully stuck inside the marquee black edge that they give you or otherwise they may come loose and hang down where once the light is on, you can see it and the only way to fix it will be to take it apart which is a hassle not to mention sticky! I learned the hard way with my Marvel Super Heroes but I manage to fix it. My MK II unite came out far better.
Finally take your time in applying the adhesive strips for the top and bottom of the marquee. It will look like it naturally belongs there if you do it right. Overall I am happy and the game units don look way better!