Hello everyone,

My first post here. I'm having a strange electrical issue with my 2014 Scion tC:

• Tail lights: Fade away and stop working when starting the car (brake lights work fine)
  
• Rear backup camera: Flickers on/off
  
• Check engine code: P0327 (Knock Sensor Low Input) – came and went
  

I found a taillight wiring diagram, but it's for an xA and doesn't match my tC.

Could someone share the correct EWD for the tC2? Any advice on a common failure point (bad ground, short, etc.) linking these three issues would be greatly appreciated.