Need advice grounding DDX916ws HU

[mybrzisslow]

Simply put, I have a DDX916WS head unit along with a 28pin harness that I purchased from Auto Harness House. This is all going into a 2016 BRZ.

The 28pin harness allows me to retain all OEM functionality of the reverse camera, Aux, etc.

Now I know what few wires I need connect and splice together, except I am unsure about the two ground wires that belong to the 28pin harness; I have dark green wire that is for grounding the reverse camera, and a thicker black grounding wire.

My questions are; Is it necessary to ground these wires? If so, which of the two should I splice into the head unit's grounding wire?

Also here is a photo of the 28 pin harness I am using;

[Chimera]

you can ground both to the OEM ground. Ground is ground is ground, except it isn't exactly with inductive loads, but that shouldn't be the case here.


there's a concept of poor or bad ground, where the ground could get busy or backed up. lookup ground loops, or inductive load dump if you want to know more, but its safe to ground both to the same spot. technically the whole car shares the frame as its common ground.

[mybrzisslow]

So technically, I can connect the green "video ground" cable to the black ground cable, and then proceed to connect that black ground cable, to the chassis ground cable of the head unit's harness?

I also believe I need to connect the ebrake wire to the chassis ground cable as well in order to play video while driving.

[mybrzisslow]

sorry for the noob questions. I have looked at a plethora of HU install vids, and DIY wiring topics here on the forum, but I wanted to make sure I do this right and not screw anything up.

[Chimera]

Originally Posted by mybrzisslow

sorry for the noob questions. I have looked at a plethora of HU install vids, and DIY wiring topics here on the forum, but I wanted to make sure I do this right and not screw anything up.

Its fine, yes you should be able to ground them all together. the parking brake may need to be flashed, I know on pioneer units they need to see and on off cycle on ground, there are people on amazon that sell bypass relays. on kenwood I haven't personally encountered that before.

[Byza]

Have you seen this video? It's specifically for the DDX916WS. If you are still unsure maybe flick carbon car sounds an email, they seem pretty helpful.

[ame="https://www.youtube.com/watch?v=3pl4z677Xq0"]DIY: How To Install A Stereo In Your Toyota 86 / Subaru BRZ - YouTube[/ame]

[mybrzisslow]

Originally Posted by Byza

Have you seen this video? It's specifically for the DDX916WS. If you are still unsure maybe flick carbon car sounds an email, they seem pretty helpful.

Yeah I've already seen that video. The problem is that they do not install the 28 pin harness adapter to retain the AUX and reverse camera. I needed to know how and where to ground the two grounding wires of this harness adapter.

[Chimera]

Originally Posted by mybrzisslow

Yeah I've already seen that video. The problem is that they do not install the 28 pin harness adapter to retain the AUX and reverse camera. I needed to know how and where to ground the two grounding wires of this harness adapter.

How is the camera getting powered?
IF it is switched power from reverse lights or so, then ground it to the OEM ground. if its not switched power then the ground needs to be switched so the camera is not always on even when the car is off.

[IceFyre13th]

Here is your answer, go to one of these....

https://www.google.com/search?q=virg...utf-8&oe=utf-8

[psionix]

Originally Posted by mybrzisslow

Yeah I've already seen that video. The problem is that they do not install the 28 pin harness adapter to retain the AUX and reverse camera. I needed to know how and where to ground the two grounding wires of this harness adapter.

Hi, I am in the same situation as you. Thinking of installing a ddx917ws to my 2017 BRZ.
I probably will be flying in the harness from CarbonCarSystems but I wish to retain the factory AUX as well.
Could you kindly guide me on how you did it?