Stereo wiring help please!

[sajonf]

I am working on wiring up my stereo and am having some difficulties determining the correct wiring for my harness. I am typically pretty good at this type of stuff but this documentation has me stumped.
Here is what I am working with:

2010 40th with Bose
Scosche NN04B harness
PAC SOEM-4 LOC
Pioneer AVH-P3300BT Head Unit
Axxess ASWC
Relay for parking brake bypass

The part I am having trouble with is that the Scosche directions suck. Their packaging says there is a blue/white wire for remote amp power which I would expect. However on the harness itself there is no blue/white wire. However it does include an orange/black wire that is marked “dimmer ground”. This is not indicated on the package at all.

So I have no idea where to connect the remote amp wire from the PAC SOEM-4 to the wiring harness since there is no blue/white wire on the Scosche. Also, what the heck is the orange/black wire for? The head unit only has one illumination/dimmer wire and it is orange/white just like the other dimmer wire on the harness.

Here are pics of what I am talking about. Any help would be appreciated. If no one has any ideas then I suppose I will contact Scosche but I thought I would try here first. Thanks

[sajonf]

I went ahead and called Scosche and here is what they told me if anyone is interested:

First, the wire color code mapping on the packaging is just a default mapping they put on all wiring harness packaging, not every vehicle will have every wire indicated on the package. It would have been nice to know that.

As for the blue/white wire – he said the NN04B is not supposed to have that wire. He said I can attach the remote pwr wire from the PAC SOEM-4 to the red 12v ignition wire on the Scosche harness.

I saw in some other threads that I should attach the PAC-SOEM-4 remote power wire (blue) to the blue wire on the Scosche ANTENNA adapter. Is that correct? Would this be in lieu of the red wire on the harness? I assume you just need to provide switched power to that wire.

The orange/black wire needs to be grounded if you are using the orange/white wire for dimming which I will be since my Pioneer head unit has that wire. If you are not using the orange/white wire you do not need the orange/black wire.

Does anyone agree with this information? It seems to make sense but I will find out tonight when I dig into it again.

I also have a blue/white wire on the head unit labeled remote amp power – I assume it needs to be connected to the same place as the blue wire on the SOEM?

Thanks in advance

[bigaudiofanat]

Basically your blue wire from the sch harness needs to be wired to your adapter for the bose and than wires to the amp or REM turn on from the new head unit. The orange wire can go to your dimmer OR the solid orange wire. the head unit is just looking for power from that wire to dim the unit.

The orange and black wire if I remember correctly does get grounded. I have only done two bose 370z cars.

[sajonf]

Originally Posted by bigaudiofanat

Basically your blue wire from the sch harness needs to be wired to your adapter for the bose and than wires to the amp or REM turn on from the new head unit. The orange wire can go to your dimmer OR the solid orange wire. the head unit is just looking for power from that wire to dim the unit.

The orange and black wire if I remember correctly does get grounded. I have only done two bose 370z cars.

So you are saying the scosche harness blue wire (power antenna) should be connected to both the blue wire on the PAC SOEM 4 and the blue/white on the Pioneer head unit? Thanks for your help!

[Footloose301]

Can't wait to see how this turns out. I want a new HU without swapping all the speakers and messing with running new wires.

[sajonf]

I have created a Visio to help with my questions. Based on my research from this site and elsewhere, I think this diagram is correct and complete except for the items in red which I am not sure about.

1. Both the PAC SOEM-4 and the Head Unit have Remote Amp Pwr wire (blue on PAC and Blue/wht on Pioneer hu). Do they both need to be connected together and to the 12V switched power? Or should I just cap off one and connect the other? If so, which one?

2. Is the blue wire from the Scosche harness (labeled Power antenna) a 12V switched wire or should I use the Red 12V switched?

3. What do I do with the blue wire on the Scosche Antenna Adapter? Cap it off?

4. Anything else look innaccurate?

Thanks to anyone who can provide input.

[SiXK]

Originally Posted by sajonf

3. What do I do with the blue wire on the Scosche Antenna Adapter? Cap it off?

No, connect it to the blue power antenna lead from the head unit. I made that mistake on my install (Alpine INA-W900) and am/fm reception is crap. Apparently its needed to turn on some sort of antenna booster or something. Regardless of the specifics, it needs to be hooked up for good radio reception. I am going to pull my head unit this weekend and hook that wire up.

[sajonf]

Good to know, thank you

[sajonf]

Updated diagram

[sajonf]

If anyone is wondering, this worked perfectly. The diagram is accurate. I wired everything up as shown and it worked on the first try. I was a bit surprised actually. It was pretty difficult getting all the stuff in the dash but it is possible.

It sounds so much better than the stock system. The head unit must be the weak link of the Bose system because the Pioneer sounds so much cleaner and sounds better loud, with less distortion.

Jason

[RayMaN]

What do you use to ground it? I don't see where to connect my ground wire.. Also there's an extra orange/back wire (or orange/white, I can't remember now) which I don't see where to connect

[RayMaN]

I think it said something about dimer?? (The orange/white or black I mentioned)