I don't remember there being a specific one, but the pinouts for the driver board's connectors are labelled on the board itself in white silkscreen. You just have to match those labels to the Wii's AV pinout diagrams, perform the low voltage modification in accordance with the general low voltage mod guide, and install the VGA patch.
IIRC the H-sync and V-sync lines on a few series of those driver boards are mislabelled and might require swapping those two lines to get picture.
