I did not need to touch the connection at the screen itself. I cut the
black connector off at the wire each side of the connector for the screen, I
initially tested at the connector and found power on the vehicle side, but
not the screen side, the connector had corroded inside and would not come
apart, so removal was the only option, I cut and bared the wires, there was
not enough free play to just join the ends, so I used heavy wire and crimp
up butt connectors to rejoin. on mine it was the drivers side.