Help with 1996 Crown Vic wiring

[DIYing but kinda dying]

I'm putting an aftermarket head unit in a 1996 Crown Victoria--or at least trying to. I cannot find the proper adapter harness to connect the aftermarket radio to factory wiring.
The stock radio has 2 plugs going in the back. 1 is the standard gray 8-pin Ford that's used in numerous models and is easy to find. The other is this weird little 16 pin plug that only uses 8 of the pins. Images attached.
I've taken this car into numerous car audio places, asked Crutchfield, and no one seems to know where to find a harness that fits this thing. I was recommended numerous Metra harnesses, but nothing has fit. Note the placement of the receivers for pins connecting from the stereo/adapter.
Car info: 1996 Crown Vic, base model, no premium sound system, no factory amplifier.
Any help or recommendations is appreciated.

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[Ripkon]

My Vic is 05 and had a large plug then a smaller plug. I only need to utilize the larger plug. This could be your problem here. You only need to connect the 1 plug

 

[DIYing but kinda dying]

My Vic is 05 and had a large plug then a smaller plug. I only need to utilize the larger plug. This could be your problem here. You only need to connect the 1 plug

I tried that method, but the 8 pin gray only supplies power to the head unit. I could load CDs, connect Bluetooth, control the dimmer, and so on, but without the 2nd plug, I got no sound.

 

[Ripkon]

Amazon.com: Scosche FD16B Wire Harness to Connect an Aftermarket Stereo Receiver for Select 1998-2009 Ford Vehicles: Car Electronics

Buy Scosche FD16B Wire Harness to Connect an Aftermarket Stereo Receiver for Select 1998-2009 Ford Vehicles: Radio Wiring Harnesses - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

[Ripkon]

Ok so, jump a constant to yellow and ACC to Red