T56 wiring diagram?
 

Does anyone have one? :)

What exactly are you looking for ?? Sensor, skip shift.... speedo stuff ??

Here is a linky to the factory service manual, but it doesnt really show electrical representations that I think you are after..... but it is something good to have around.

Street and Performance has a diagram on their web site but I can not get it to open.

file:///C:/spwebsite/Street&performance%20folder/Street&performance/ONLINETECH/T56WIRINGallebook.pdf

If you buy the OEM GM connectors, the connections are as follows:
Reverse Lockout
Pink - +12V
Green - ground

Backup Lights
Green to ignition +12V
Brown to backup lights

VSS
Purple – speedometer signal
Green/Black - Ground