Nissan Quest III (2003-2009) ladder in gnd wiring diagram

AUDIO UNIT AV SWITCH BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLUETOOTH CONTROL UNIT (UNDER RIGHT FRONT SEAT) BRN WIRE BUS - BUS GND BUS+ BUS SHIELD BUS- COMBINATION SWITCH (SPIRAL CABLE) (BEHIND LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DCU-DSP DCU-DSP DSP SHIELD DSP-DCU AUDIO SHIELD DCU-AUDIO SYNC GND AUDIO-DCU RGB SYNC DISPLAY CONTROL UNIT (BEHIND CENTER OF DASH) DISPLAY UNIT DOWN UP DSP-DCU FRSP LH (+) GRN WIRE GRN/ORG WIRE GRN/WHT WIRE HP RGB SYNC IGN ILL ILL CONT IN 1 - INV GND INV VCC LADDER LADDER IN 2 LADDER IN GND LADDER OUT 2 LT GRN WIRE NCA WIRE ON OFF OFF ORG/ WIRE OUT 2 + OUT LADDER PHONE/ END SWITCH PHONE/ SEND SWITCH PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PPL PPL BUS (+) BUS SHIELD BUS (-) RED WIRE RED YEL/ WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RGB GND RGB SYNC SEEK SWITCH SHIELD SIGN GND SIGN VCC SOUND SYSTEMS SPEED STEERING WHEEL AUDIO CONTROL SWITCHES SW A SW B SW C SYNC GND UP DOWN VOICE VOLUME SWITCH WHT GRN/ WIRE WHT WIRE YEL WIRE YEL/RED WIRE