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Discussion Starter · #1 ·
Okay so I purchased an Alpine 9885 HU along with the PAC-SOEM4 to install the unit. My first attempt was to wire the harness to the soem4 adapter and from the adapter to the factory harness, this unfortunately left me with NO sound. I then switched the wire connections for the RCAs and the sound worked but of course the output is not favorable. What am I doing wrong?

Background info... I connected and matched wire for wire between both the aftermarket harness and factory harness (w and w/o the soem4). I have also been sure to connect the remote amp wire (which is indicated in my "success" with the rcas).
 

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Discussion Starter · #4 ·
Yes... Goal was to just replace the OEM HU. I used the LOC to wire it originally but it yielded no sound. I then swapped the wiring for the RCAs on the LOC and "success". This however isn't desirable since now even at max volume the sound levels are incredibly low.
 

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Discussion Starter · #9 ·
I'd like to help but haven't got a clue what any of those parts do or how you're trying to us them. How did you determine that these parts would do the job?

-Dave
Really all the parts mentioned, minus the LOC, are pretty typical for replacing an OEM HU. It also helped that all parts were recommended by Crutchfield for completing the job. The parts were only for supporting background information, my problem is that I do not have good sound levels. With the volume all the way up the sound remains low, WAY lower from the OEM HU.
 

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Discussion Starter · #12 ·
@ELCID86... I truly doubt this is the case as I have completely redone the wiring several times now. I have wired the aftermarket HU with and without the LOC but the only operable way has been to use the LOC with RCA connections.

@Reach.... Why bother ? This job was suppose to be simple plug and play. I figure I would join in with the other countless people who have claimed success with this. The LOC is truly a moot point, the only reason I have it is because Crutchfield recommended it and the only reason I use it is because it's the only way I can get sound right now. If I had read from the beginning that replacing the amp was a must I'd have done so, but right now I really want to know if that is my only option?

So I ask again, is anyone actually familiar with this issue?
 

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Discussion Starter · #14 ·
New HU-->C'field provided wire adapter-->BMW wire harness was the first setup I tried to no avail.

New HU-->SOEM (via wires)-->C'field provided wire adapter-->BMW wire harness is the second thing I tried to no avail.

New HU-->SOEM (via RCA)-->C'field provided wire adapter-->BMW wire harness is the third thing I tried with some results.

I connected wire for wire match each color from the C'field wire adapter to the matching color on the BMW wire harness, this however does not yield any sound from the speakers once the HU is in place.
 

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Discussion Starter · #19 ·
Okay.. Sorry about the absence there. I did get it to work correctly, but... I'm not exactly sure how. I'm leaning towards you being right that the output and inputs were switched on the LOC.

Fortunately, I never disconnected the wiring I only left it to the side. As soon as I plugged it in and switched the toggles to 'Wired' the stereo sound worked perfectly. Now the problems I have now are just silly in comparison. After closing everything up my SWI-Jack (Steering Wheel Controls) quit responding and upon activating XM there was no sound there. LOL

Thanks for the help!
 
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