Putting stock p/u back in sub 1,wiring ?

[marvo]

I think I will be pulling out the x2n and putting stock p/u back in my sub 1,but not sure which wire is ground on the stock p/u, is it the green or the black wire.
The red and white are still taped up so I don,t have worry about them,should have made a note when I took it out but was'nt thinking of putting it back in.

 

[fbecir]

Perhaps some pictures will help you :

 

[marvo]

Thanks, looks like the black is ground,kinda thought it was,just wanted to make sure,like to do it right the 1st time