Today I was thinking to adapt the GC controller plug to power on the GBA. I have an extra controller plug lying around which I can butcher. According to this picture https://cdn.instructables.com/F0B/1GMI/IKBHVRYO/F0B1GMIIKBHVRYO.MEDIUM.jpg you can take DC 3.3V from that pin and GROUND from the other two. The GBA takes DC 3V 0.6W (0.2A) but I read on some forums that GBA's can work with 3.3V because they have an internal voltage regulator or something. By the way this mod is for the Game Boy Player: - in port 1 I will have the GBA connected using the official link cable (DOL-011); - in port 2 I will have the GC controller connected (you can't navigate through GBP menu with the GBA); - in port 3 I will have this plug connected from GC to the GBA battery contacts to power on the GBA. What do you think, it will work or I can damage something? Thanks!