Amazon: jamma wiring harness TAPDRA 28/56 Pin Jamma Harness Wire Wiring Cable Loom Arcade Game PCB Video Game Board for All Pandora's Box Edition, Game Elf and etc. by TAPDRA. $12 $ 12. 99. Get it as soon as Tue, May 28. FREE Shipping on orders over $25 shipped by Amazon. Only 1 left in stock - order soon. Install a JAMMA Harness in an Arcade Cabinet: 9 Steps Install a JAMMA Harness in an Arcade Cabinet: I have an arcade machine in a cabinet that doesn't work. I got another board, but the pins didn't match - I figured out I needed to replace the wires. I bought a JAMMA harness, but everything was in Chinese. Here's how I muddled through to ins..