While we are not able to provide step-by-step instructions on how to do this, it is fairly simple to do and there are many, many videos and articles out there on how to convert an original arcade cabinet to a multi-game system.With that being said, we do offer the parts to do the conversion yourself! Many of our Complete JAMMA Arcade Kits are perfect for changing out the components in an Original Arcade Machine to a multi-game JAMMA Arcade. Some things to be aware of first:Not all original Arcade PCBs have the same power requirements. This means the original power supply in the unit may not be compatible with a multi-game JAMMA board and you could burn out the new board. We highly recommend purchasing a new Switching Arcade Power Supply for your multi-game JAMMA board so you can be sure your board is receiving the correct power voltages.The original wiring of the machine may not look like it needs to be replaced, and can be used in some cases, however more often than not people will experience issues with controls not working correctly, or at all due to there being broken connections inside the wiring that you cannot see. For this reason, we recommend taking out all the original wiring for the controls and putting in a new Universal JAMMA harness. This will most likely save you many hours of troubleshooting.You may need to modify the cabinet of your arcade to utilize the multi-game JAMMA board to it's full potential. This means you may need to drill new holes or replace the control panel completely for the cabinet to be playable with a multi-game JAMMA board.At the end of the day, once an Original Arcade Machine has been modified in any way, it will devalue the cabinet. If you want to keep the value of your Original Arcade Machine, consider building a new cabinet for a multi-game system.