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Old 08-23-2019, 06:46 PM   #8
Scooby Newbie
Member#: 51064
Join Date: Dec 2003
Location: Central Jersey
2015 WRX


Originally Posted by chiefhandker View Post
Here are some tips for installing a Seicane Head Unit in a 2015 STI with Harmon Kardon. My headunit was a FV629US. I chose the Seicane unit from this link.

Overall not too bad, but after installing I didn't have any audio.

I found that you need to signal the Amp to turn on. To do this you use the blue auto-ant wire from the Seicane harness and tap into the pink wire in the Subaru 10-pin harness.

I also needed to make my own RCA to speaker wire cables to feed a low signal to the speakers.

The RCA side outer wires are the Negative, the inner wire is Positive. Make 100% certain there isnít even a hair of the outside shield that can make contact with the inner wire.

Make sure to solder all connections for reliability.

The kit didnít come with a microphone so I needed to order that separate.

Sound quality is MUCH improved, plus I can now run Waze on the big screen. Iím also hoping the phone call quality will be improved as my stock one was not great.

Pictures here.

Thank you for this post. I'm in the market for an Android HU. I have a 2015 WRX limited with the FV629US HU and HK amp in the rear. You've made this install sound really easy; seen way too many youtubes and no one has answered or figured out this puzzle for HK owners. This also includes the thousands of FB pages available, no one seems to know how to do this install.

A few questions for you...

1) How are you liking the HU to this day? Any issues, likes, dislikes?

2) I'm looking at a few different Android HUs. Is it safe to say I can use the same wiring methods you used? They all look the same to me.

a) Seicane. obdii-s169208
b) Dasaita
c) Sygav

3) Do you use Andriod Auto or Apple CarPlay? Sygav has an option to use a "built-in" CarPlay function that supports iOS iPhones; basically wireless Carplay for iphones.

For an android, I would need this wire:

4) In continuation from question 3, if you are using the dongle, did you have to pay extra to have it connect to the HU, or was the APK install of some software all you needed?

Thanks in advanced. Any information you can provide would be greatly appreciated.
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