Now the photos...
The input TP is the No. 113; the output TP is the no. 114.
This is the link at photo of mb retro
, with the DIY cable.
The link at photo of retro display
; the link at photo of front mb
; the link at photo of battery board
The particular of mb retro with DIY cables. Note that the connected cables at TP 111 and TP 518 here are only a trial. The black cable is the cable grounding.
The detail of MB front at debug connector.