I've been thinking about something. I am planning on buying an Alpine H/U, an amp, along with new speakers for the door and sail panels. I would be running all new speaker wire. The Alpine has a setting where the Headunit itself provides no power, leaving the amplifier to provide all speaker power.

I do not liek the Monsoon system, and was thinking about bypassing it completely, by setting the H/U on Defeat mode, and not connecting the speakers to the wiring harness. Would this work?

 

No reason why it would not work.

From the factory harness you really need just a few wires.

Constant +12
switched +12
GND
Dimmer

For the amps to turn on you'll need the remote turn on lead.

That's it.

Just tape off everything else that's unused, run your rca's, power wires, etc and you'll be all set.

Btw, this applies to any aftermarket HU, not just alpine.

Which alpine you considering?

 

I'm looking at the 9853. I just want to be sure that it would work this way, cause the Monsoon system is crap, and I want to either override it or totally remove it. I would like to avoid the monsoon putting out any sound at all, but I do not know what to do with the power antenna. The rest of the wires, such as illumination, I can look at in the service manual, unless they are all standardized and it explains them in the Alpine installation book.

Also, the new Alpine harnesses have seperate leads for the power antenna and the remote turn on. I have the power antenna and would like to keep it. Does anyone know what I would connect thje remote turnon lead to? Thanks again

 

The remote turn on lead would go to wherever your amp is. The antenna wire would get spliced into the wire coming from pin 8 of the factory harness.

Monsoon Headunit wiring harness
Pin#............Color.................Function
1...............Grey..................Front Left Speaker -
2...............Tan...................Front Left Speaker +
3...............Dark Green............Front Right Speaker -
4...............Light Green...........Front Right Speaker +
5...............Black.................Ground
6...............Brown.................Illumination
7...............Grey..................Dimmer
8...............Pink..................Power Antenna
9...............Yellow................12V Ignition
10..............Orange................12V Constant
11..............NA....................NA
12..............NA....................NA
13..............NA....................NA
14..............Dark Blue.............Steering Wheel Controls
17..............Light Blue............Right Rear Speaker -
18..............Dark Blue.............Right Rear Speaker +
19..............Yellow................Left Rear Speaker -
20..............Brown.................Left Rear Speaker +
The smaller plug on the back of the radio is for the optional cd changer.

 

OK. Thanks. I would also need to get a PAC steering wheel adapter to use the steering whell controls?