Just placed my Happ order. Sheesh...those parts really add up. Over $500. The suspense is killing me. I'm finally going to build my first full-size arcade machine. So...here's my question:
Among the other parts I ordered I got a large, round, red illuminated push button. I plan on making a label for it that says VAN. Can anyone guess what it's for

? Here's my question. Has anyone managed to make the Scroll Lock LED blink in Spy Hunter in time with the weapons van becoming available? I'm already planning to use the NUM LOCK and CAPS LOCK for illuminated 1 player, 2 player buttons.