GM side Metra plug. L to R 6 wires:
Yellow (missing in pic), Orange (missing in pic), Pink, Grey, Violet/White, Black.
Yellow is Hot in ACCY and Run. It is connected to Yellow at the Pioneer (P) harness plug which is power regardless of ignition position.
Orange is hot at all times. It is connected to Red at P plug which is for electric terminal controlled by switch.
Pink is for ? and not connected. Metra plug has a blue wire in that position, both sides and says it’s for a power antenna, which I don’t have. So pink is not connected on the GM body side.
Grey is for ? It is connected to Orange/White at the GM side Metra Plug, but the Pioneer side Metra has an empty pin. Only grey I can find in the manual goes to LF Speaker. Maybe I’ve called the color wrong. Wish the f’n manual would should wire colors and function to their pin position.
Purple/white is show as hot at all times coming from headlight switch/dimmer. Metra plugs, both sides, have an Orange wire in that position. I have it connected to Orange/White at the P plug which is for lighting switch terminal.
Black is ground. It is connect to black through the Metra plugs to black at P plug which is also ground.
The next 4 L to R are speaker wires.
Light green is + for RF speaker; Dark Green is - for RF speaker. Connected to Grey and Grey/Black stripe through Metra plugs to Grey and Grey/Black stripe at P Plug which is for +/- at RF speaker respectively.
Same pattern is repeated for the next two Tan and Dark Grey speaker wires for LF Speaker.
Looking Pioneer instructions, it says the unconnected Blue/White is to be connected to system control terminal of the power amp. As noted this wire has a tag saying it’s for “System Remote Control”. Does this go to the Grey to Orange/White to unpinned at the P side Metra plug? I think this is my mystery. I need a lemonade as I’m tired of this crap.
