I've got an Apple Cinema Display with ThunderBolt-2 and MagSafe-1 connector and would love to combine these two cables to one ThunderBolt-3 to supply power to the Mac and video and sound to the display on one cable.
The TB-2 on the outside is connected to a TB-2 port on the inside. The MagSafe-1 disconnected to two "pins" GND and Voltage on the inside.
There are TB-2 to TB-3 adapters (e.g. Apple) on the market. Is there a way to connect the "power pins" to the TB2-3-adapter and solve my problem?
(I've done a lot of soldering and working with Arduino etc.)