Hahhaha yes Mr. Morti, we think alike!
I did the same thing for my EVO stick. My case RGB LEDS are powered externally with a battery back hidden in the stick (complete with switch in the battery compartment!). I also popped in Remora for the buttons and am currently doing a stick LED mod.
As for TC, I have a general gist of how to do LED modding but unfortunately, this only applies for Madcatz sticks. I have no idea whats inside the HORI FE.
Crowd question, how are the LED side strips of the FE powered?** If** they are independent of the main PCB, you could pop in a PS360+ in there and then everything would roll smoothly.
TC, there are like 2 main types of LED button modding: Basic light up on activation LED buttons OR LED buttons that are powered and controlled by a controller (Ex. Remora / FGW Controller, etc)
With a controller, you can do a lot of cool effects such as RGB colours for each button, screensavers, and different press effects. They also have spots for LED Stick modding too. FGW has light up stick on activation, but it’s a bit more complicated to do. Gotta ask Mr. Morti for that one.
Im sure you could get these controllers to work, but remember that they aren’t natively made for HORI sticks. You’ll have to get someone’s insight on how to implement them.
For LED Stick lighting, check out my thread to see how I did it: LED lighting a Sanwa stick help / Semi-tutorial
I highly suggest you buy your LED Stick parts from paradisearcadeshop.com They have everything you possibly need and will even drill the balltop for you if you ask nicely. Great people! (Ask Susan after you placed your order, she’s a great person!!!)