What in particular are you looking for as a diagram? It seams english is not your native language, which is ok, but it's kinda confusing what your looking for.
As a shot in the dark ... the cables coming out of the harness are colored as follows (and in the order shown on the picture below, from top to bottom):
White RCA -- Audio input
Red RCA -- Video 2 input
Yellow RCA -- Video 1 input
Black round -- Barrel connector for 12v power.
Large Black round -- connector for second cable which has VGA and USB touchscreen connector
Picture of it is here:
