Car is a 2011 Nissan skyline. I’m stationed in Okinawa Japan. Friend asked for help to install subs to the one radio. Wasn’t expecting it to be so complicated. Couldn’t find the correct wiring diagram it appears and tried to use a 9v battery and pins through the unplugged harness to try and find the speakers. Wasn’t expecting there to be like 9 different wiring harnesses. Never did find the correct wires so never spliced anything. We did however have to turn the car on to move it with out the radio installed. At which point the car didn’t want to shut off. Had to disconnect the battery. Anyways after plugging everything back in the car now has several dash lights and the cameras, a/c, and instrument cluster are all no longer working! Please help.

 

I don’t know if this helps or not but here the part no.

 

See this post. There are two (2) connectors with yellow tape that MUST be plugged into the Unified Meter/ AC Amp (white, plastic rectangular box mounted on headunit) or the car will go "nutty." It is VERY easy to mix these two connectors up with others that go to the radio.