Need help with install in 2017 Expedition

[kyled78]

2017 Ford Expedition EL with Sony system
I am looking for help with the best location To access pre-amp signal and post-amp signal. I need to run pre-amp to my AudioControl LC7i, then to 4 channel amp, and then to post-amp wiring to send signal to oem speaker locations.
Any help is greatly appreciated!

 

[1aespinoza]

Any help is greatly appreciated!

Many whom bypass the OEM amp, tap into the harnesses there. It is all there in one spot so no need to remove panels or runners. Just Google 2017 Ford Expedition amp pinout.