2007 tahoe q6 sport ignition trouble

[bad2dabon]

I have a q6 sport and I am not getting any power to the ignition. i have checked circuit breaker coming off the starter and it is good. I have tried to trace it back but when it goes into the multi pin connector at the back of the motor it changes color and i am not sure which one it becomes

 

[Bt Doctur]

1 Do you have 12v at the red wire at the ignition switch
2 Do you have power at the 50A circuit breaker
3 Do you have power at the alt output wire(orange)

 

[bad2dabon]

I do not have power at red wire at ignition
I have power at the 50amp breaker
Don't have orange wire. Have blue with no power and yellow with a black stripe and no power