Just curious why some of the actual solder connections appear to be blacked out/redacted in your modification picture? Makes potential interest in duplication difficult not knowing/understanding exactly what's under the black-out and/or why its there.
Statements in my posts are opinion only, not to be construed as fact. Any projects I engage in are at my own risk! Their outcome cannot be assured and may result in success, small/no change or catastrophic failure. I encourage no one rely on anything I say or do as gospel and to realize your mileage may vary!