I also have 2 installed in my ALU, mainly for Assault. I added 2 thumb buttons to each one, Xenophobe style, and did not use the included Tron Sticker. There's plenty of room for 2 thumb buttons using these:
https://www.amazon.com/dp/B07KSWL92K/ref=cm_sw_em_r_mt_dp_AXSMJJ8NX7258KGKK5BN?_encoding=UTF8&psc=1
Since I was wiring in 2 more buttons to each one, I made the trigger "A" instead of "B", since that made more sense to me. I also chose not to connect the LED lights because it's way too much glare. A resistor would dim the lights but it wasn't that important to me.