Looking for radio plug wiring diagram

[376shovel]

I am installing a double din android radio in my car. I have everything from the largest main connector harness done, and the smallest amp connector done. There is one plug left and I have no idea what those wires go to. I'm looking for the wires that go to the steering wheel volume control and seek buttons.

I have the aftermarket adapter but my radio comes ready to wire into the steering wheel controls.

Does anyone have a pinot or wiring diagram to the plugs that go into the back of the radio?

[BAD MERC]

On the main radio harness the integration wire for the steering wheel controls is pin 18, Lt/blue/red wire. You can program each button (vol up, vol down, source...) one at a time during programming of the interface module. The harness you have that connects to nothing may be for a trunk mounted CD changer. You're only going to have a large gray 40 pin connector and a small harness for the factory woofer. Tip: use a resistor on the OE amp turn on wire to prevent on/off pop. I can't remember the value but whatever works just test it to make sure the pop is gone.

[BAD MERC]

Also, the radio dimmer wire will not show voltage during testing unless you cover the ambient light sensor on the driver side of the dash. That keeps the radio from dimming into blackness during daytime driving with headlights on. For navigation, the gray/black wire is speed sense. These OE radios had speed dependant volume.

[376shovel]

On the main radio harness the integration wire for the steering wheel controls is pin 18, Lt/blue/red wire on main radio harness. You can program each button (vol up, vol down, source...) one at a time during programming of the interface module. The harness you have that connects to nothing may be for a trunk mounted CD changer. You're only going to have a large gray 40 pin connector and a small harness for the factory woofer. Tip: use a resistor on the OE amp turn on wire to prevent on/off pop. I can't remember the value but whatever works just test it to make sure the pop is gone.

Damn dude thanks. Yes I got the step down resistor on there, works great.

So it's only one wire then?

[BAD MERC]

Yes, one wire does it all depending on resistance values.

[376shovel]

Do you know which ports I am plugging in the RCA jacks from the amp/sub?

This is the adapter I have:
https://www.amazon.com/Metra-70-5521-Radio-Wiring-Harness/dp/B000K50GTA?psc=1&SubscriptionId=AKIAILSHYYTFIVP WUY6Q&tag=duckduckgo-d-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B000K50GTA

This is plugging into an ATOTO A6

[BAD MERC]

The OE woofer is mono but there might be 2 RCA plugs, red and white on the radio. Plug them both into the SW or SUB output of your Android head unit. You may have RCA outputs that are configurable and their usage may be selectable in your setup menu. Regardless, you should be able to independently control the sub level from the new radio. Something the OE radio lacked.

[376shovel]

Yeah it looks like I'm only supposed to use the white rca into the sub audio out. Ok then. Glad I didn't push the unit all the way in yet.

[376shovel]

I plugged the white RCA into the sub output. No change. If I plug it into a speaker input, that particular speaker increases in sound big time. What gives?

[376shovel]

Here is the hookup for my car

[376shovel]

Disregard. The single white RCA in the sub output did the trick, I just had to adjust settings in the head unit to notice it.

Last problem I have is apparently my front driver speaker is either not wired correctly, or it took a dump on me.

[BAD MERC]

Glad to help. At least you're at the finish line.

[376shovel]

All done. Thanks for the help! I'm pretty damn happy with it.