[Technic]

BIMMERPOST / Classifieds

Asking Price:

None

Item Interest

The MY2010-on 1- and 3-Series standard sound system was downgraded from a 10-speaker, separate OEM amp to a 6-speaker, no OEM amp system. So adding an aftermarket amp requires cutting the wires in the back of the OEM HU or cutting the speaker wires either at the speaker themselves or under the carpet.

This PnP harness eliminates that hassle and the damage to your OEM wiring by directly interfacing with the OEM Quadralock connector in the back of the OEM HU and producing a cable extension for the connection of an aftermarket amplifier in the trunk without cutting any OEM wires.



iDrive version (longer Quadralock):



Complete harness includes:

- OEM Quadralock connectors fully populated (max of 40 wires) to connect between the OEM HU and the OEM Quadralock in the car
- A 12V relay pre-wired to provide an OEM remote turn on signal for the amp(s). The new amp will turn on when a door/trunk is opened and will turn off in about 2 minutes after the door/trunk is closed and the car is off, just like all OEM amps.
- 15' cable extension with each wire labeled to the inputs/remote signal of the aftermarket amp
- 15' cable extension with each wire labeled from the aftermarket amp outputs back to the OEM HU.

Notes:

- this harness is designed to add a 4-channel amplifier to the Stereo system as is. If the idea is to add a 6-channel amp or to bi-amp the front speakers and the woofers separately then new wires need to be added from the amp to the woofers. These wires are not included.

To power the woofers separately -as in replacing the woofers with SWS-8- the OEM woofer connector does not have to be cut, just tape it under the carpet and run new wires from the amp to the woofers. My harness will route the front channels of the new amp to the front doors without an issue as the woofers are connected in parallel to the front doors.

Therefore, adding an amp will be completely reversible without any ill effect to the OEM wiring as long as these instructions are followed and the amp output is not in excess of the OEM wiring (20-18AWG) capacity.

- if your car is equipped with the MOST (fiber optic) ring you must transfer the MOST connector from the OEM Quadralock to the new Quadralock harness in the same exact slot. Make sure that it locks into place.

Price is $65 shipped in the USA. One year warranty against defects; warranty voided if Quadralock harness is modified in any way. PM for details...

[fll_punk]

im in paypal inc.

[tafan321]

PM'd!

[emoon3]

I'm definitely in for one. PM's aren't working for me right now. Is there another way I can contact you to send payment?

[Technic]

Originally Posted by emoon3

I'm definitely in for one. PM's aren't working for me right now. Is there another way I can contact you to send payment?

PayPal is **********************... note: this harness is only for the OEM HU now. In the next couple of weeks I will have a longer harness for the iDrive (same price).

[srcstc]

Very nice!

Great! PM-ed and ready to purchase.

[e90TiAg335i]

What part needs to be longer for the idrive base system? Just the wires going to the amp and back? I think I only need the wiring to tie the idrive into the Zapco high level converter I'm getting.

I just don't want to cut any wiring going to the idrive. I plan to run new wiring back to the speakers for an active setup on the front end. If this will not work for what I need, I'll just have to wait until your new harness is out. What do you think?

[Technic]

Originally Posted by e90TiAg335i

What part needs to be longer for the idrive base system? Just the wires going to the amp and back? I think I only need the wiring to tie the idrive into the Zapco high level converter I'm getting.

I just don't want to cut any wiring going to the idrive. I plan to run new wiring back to the speakers for an active setup on the front end. If this will not work for what I need, I'll just have to wait until your new harness is out. What do you think?

The issue is that one customer with iDrive had issues hiding the Quadralock harness (the harness with the relay in the photo) behind the iDrive computer; the computer did not fit correctly after the installation of the harness. When I tested this 7" harness in my M3 I hid it on the right side of the iDrive computer, tucked in in a small space there, but my M3 is a 2008. So it could be possible that for MY2010-on that small space is occupied by something new and the harness can't fit there.

So the solution is to extend that Quadralock a full 12", so customers will have plenty of wire to hide the harness anywhere behind the computer once plugged into the OEM Quadralock. The customer did so and now the iDrive computer fits without space issues.

There is no change to the extension cables length (15').

[e90TiAg335i]

I guess I'll just wait until you get the longer ones in stock. Thanks!

[fll_punk]

Paypal sent!

[DMA]

PayPal sent cant wait to get some better sound.

[joelc73]

Technic

Do you have an ETA on when the iDrive version will be available?

Thanks!

[joelc73]

Originally Posted by Technic

- this harness is designed to add a 4-channel amplifier to the Stereo system as is. If the idea is to add a 6-channel amp or to bi-amp the front speakers and the woofers separately then new wires need to be added from the amp to the woofers. These wires are not included.

To power the woofers separately -as in replacing the woofers with SWS-8- the OEM woofer connector does not have to be cut, just tape it under the carpet and run new wires from the amp to the woofers. My harness will route the front channels of the new amp to the front doors without an issue as the woofers are connected in parallel to the front doors.

Technic

How worthwhile is the 4-channel approach versus wiring the subs separately? I'm kind of torn... I know the "right" thing to do is run them separately but using the harness and just dropping in 4 channel amp seems so obviously simple.

What are most people doing?

[Technic]

Originally Posted by joelc73

Technic

Do you have an ETA on when the iDrive version will be available?

Thanks!

Unfortunately it will be 4 weeks at least.

[Technic]

Originally Posted by joelc73

Technic

How worthwhile is the 4-channel approach versus wiring the subs separately? I'm kind of torn... I know the "right" thing to do is run them separately but using the harness and just dropping in 4 channel amp seems so obviously simple.

What are most people doing?

The 4-channel approach (no extra wires to run) is mostly for the OEM speakers.

If you replace those speakers then you will need to either run new wires to the woofers (bi-amp) or add a proper 2-way crossover between the woofers and the front door speakers (using one amp channel per side to drive the front stage).

[Technic]

Bump...

[chris b.]

so the harnesses(with extensions) for 2010 w/navi are ready?

edit: sorry just read, got excited.

[DMA]

Technic any suggestions on a good 4 channel amp for the setup?

[Technic]

Originally Posted by E9TWO

Technic any suggestions on a good 4 channel amp for the setup?

Budget for this amp?

[DMA]

Originally Posted by Technic

Budget for this amp?

$250 Max

[Technic]

Originally Posted by E9TWO

$250 Max

If you are keeping the OEM speakers then you do not have to go too fancy: http://www.crutchfield.com/S-f1aY7Fe....html?tp=35782

It should be even cheaper on eBay.