Help with aftermarket head unit

[P3tras]

That is correct. Pin 9 is amp remote control and it sounds like antenna power is connected there (thus amp works when radio is on). You need to connect "amp" wire into pin 9 on 10 pin harness and antenna power lead to antenna connector (there should be one pin for power). That only applies to FRS (as far as I know), because BRZ has antenna power lead on pin 8 (10 pin connector).

[FR-Shred]

Well.. I will have to come back to this at the beginning of next week. I took the car back to the dealer to have them fix something and they are keeping it over the weekend. So the head unit repair I will update on probably Tuesday. My loaner for the weekend, a Range Rover Evoque!

[FR-Shred]

UPDATE:
I got my car back today, finally, and it seems like i've got some bad news.

I took the unit out again and it appears to be plugged into the 9 slot via a jumper from the 8 slot.

As you can see the little blue one plugged into the 9 is just a small 1.5" jumper from the 8.

It also has this on the main blue wire going to the 8 slot.


Do I need to just push the 8 out and put it in 9? I wouldn't see that being the issue since its jumped over..
Anything is appreciated! Thanks!

[keithr]

Originally Posted by FR-Shred

Do I need to just push the 8 out and put it in 9? I wouldn't see that being the issue since its jumped over..

No, that's fine... the jumper is there because in some cars (like the BRZ) the antenna has a power booster that comes off pin 8, and both are usually wired to the remote lead on the aftermarket HU. I am curious, however, where that tap splice is going. I'm guessing that was for the sub amp that has since been removed, which, is kind of funny, because that means that the previous owner's sub only worked when playing the radio as well.

Are there any other wires coming off the HU that are either not connected or possibly a combination of a blue color? Blue/white or white/blue or blue/gray, etc?

I did a quick search and didn't find an install manual for that model... I'm sure it's out there I just didn't dig very hard for it. If all else fails, what you may have to do is find any/all wires that aren't connected off the HU and test them with a multimeter while the radio is on.

Since you're not using that extra blue lead, you can cut it off and use it to test the voltage on the blue wire that's going to pin 8/9 without having to disconnect the harness. If you disconnect the harness, you won't have power/ground so you'd have to rig up a temporary jumper for the red and black wires to get you +12V switched and ground. If you snip off the blue wire that's tapped into the blue leads, you can test it there, then just cap it off when you're done (use a real crimp cap, please don't tape it. Tape will melt and come off over time and eventually you'll possibly end up with a short).

With the HU set to radio, you should see 12V DC on the blue wire. If you then change the source to CD or AUX and that lead drops to 0 (or anything significantly below 12), then that's the antenna lead. Look for another wire that has the 12V DC coming off the HU regardless of what source is selected, that's the AMP turn on remote.

It's there somewhere.

[FR-Shred]

I, unfortunately, do not have a multimeter.

Here is the manual if this helps..
http://books.jvc.com/booklist.asp?Model=kw-nsx700

I will check again tomorrow for any unconnected wires. For sure is at least one that I can remember, its not blue I don't think.

[FR-Shred]

Actually. Here. This should help.

[FR-Shred]

I think I figured it out. They have the blue and white (remote) going to the aftermarket amp, which isn't there, and they hooked the radio signal to the factory amp. Let's see if that's it

[FR-Shred]

Thats what it was! it works! thanks for nothing guys... haha I am just kidding! You guys got me searching!

It blows my mind that the previous owner didn't have any door speakers ever...

The iPod still doesn't work. It shows playing but no sound, I think it may be the cord tho, I am going to use my girlfriends to see if it works with that.

[Chimera]

Originally Posted by FR-Shred

Thats what it was! it works! thanks for nothing guys... haha I am just kidding! You guys got me searching!

It blows my mind that the previous owner didn't have any door speakers ever...

The iPod still doesn't work. It shows playing but no sound, I think it may be the cord tho, I am going to use my girlfriends to see if it works with that.

I was about to comment on this. I was going to say that technically the remote out and the antenna are both 12v highs (rated .2A and .25A), you could just splice all the blues together. not the best practice for sure but I'm pretty sure it would work fine. but glad to hear its working now!

[FR-Shred]

Originally Posted by Chimera

you could just splice all the blues together. not the best practice for sure but I'm pretty sure it would work fine. but glad to hear its working now!

I just connected the blue and white remote to the aftermarket and to the factory. I unhooked that solid blue for the radio antenna or whatever and the speakers still work fine on the radio so I guess it works. haha

Thanks again everyone

[greencounty]

Originally Posted by FR-Shred

The iPod still doesn't work. It shows playing but no sound, I think it may be the cord tho, I am going to use my girlfriends to see if it works with that.

Depending on how you are connecting the Ipod(USB or 3.5mm jack), the problem is either that 28-pin connector that isn't plugged into anything(3.5mm jack is connected to that) or the USB adapter that probably isn't installed.

[FR-Shred]

Originally Posted by greencounty

Depending on how you are connecting the Ipod(USB or 3.5mm jack), the problem is either that 28-pin connector that isn't plugged into anything(3.5mm jack is connected to that) or the USB adapter that probably isn't installed.

I figured it out, I reconnected all the plugs and then messed around in the settings and got it to work. Thanks!