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NSW / Zimmo / ...And it begins!

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Zimmo
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NSW / Zimmo / ...And it begins!

Postby Zimmo » Sun Oct 14, 2012 9:19 pm

Okay so, this is the first time I've posted so here goes!

So I've recently began the install on my sound system in my new Activ and i thought i'd try and share some of my progress with you guys and see what you think, or if anyone has some suggestions.

Alright so what i'm attempting to do is use the existing head unit (its not Rockford nor MMCS). And I'm simply use a signal processor in the rear mounted on a stand that will also hold the two amps.

I'm upgrading the front and possibly the rear speakers and i'm interested in sound deadening also i'm going to be making mdf/fibreglass sub boxes for both sides.

So in other words I've got a bit of work in front of me, considering i use the car everyday its gonna be quite a challenge!!

So here's where i'm up to....

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Part 1 - Running a power wire.

Postby Zimmo » Sun Oct 14, 2012 10:27 pm

So i want to provide advice to anyone who is starting a project but also any advice any of the more experienced guys and girls out there could give me would be great!!

So The first step was the power wires, i was initially stumped, multiple searching on forums and studying the firewall led me to believe that i would have to drill into the left hand corner...
At this point it was a one month old car, so that wasn't gonna happen!

But then i found this:
Image


That doesn't look like much but behind the drivers side strut tower was a small grommet which when hollowed out is big enough to accommodate a 2 gauge wire.

And almost too easily that grommet came out just behind the drivers side kick panel, you'll have to remove the panel then peel the carpet back to be able to see it.
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There is a spot in the felt that had already been cut so that it could be peeled away (i guess for use on a higher model) push that back and you should feel the grommet!
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The wires were easy to route from here, it was simply a case of hollowing out the grommet then putting the wiring sheaths on.
The Sheaths weren't necessary but i thought that running through the car they would be easier to manage and less messy.
I decided to also run an extra wire because at this stage i wasn't sure if i would need it or not!
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Image


This bit you'll want to get right the first time, its a bitch having to take everything off again to widen a grommet that wont fit! :evil:

So that was sorted, the easiest way to route the wires through the engine bay i found was to follow the factory loom which runs parallel to the firewall in the top corner
Image


By keeping it as tucked away as possible to the factory wiring, it gives it the least possible chance of being caught in the engine or melting. :wink:
Now i haven't attached it to the battery as of yet so i don't have any pictures of where to put the fuse but it should fit nicely somewhere near the oem fuse box.


Inside the car was easy, i ran the wires directly down the hood release line then down. I used as many cable ties as i could so that i didn't have wires grabbing at my foot pedals!
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Mitsu provides handy clips to keep everything in check they also help keep the wire from going slack so i pretty much run it through to the back in a minute or so.
I Just had to remove the seats the rear panels, the scuff panels (front and rear) and finally the b pillar panel.
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Finally i ran the wires up the rear wheel well and then they pop out through the boot lining!
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Too easy! :D
Last edited by Zimmo on Mon Oct 15, 2012 9:23 am, edited 1 time in total.

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Postby Fitter » Sun Oct 14, 2012 10:31 pm

how big are your amps.

in my professional opinion its much more economical to utilise the huge space under the front seats for amps and processors.

also, behind the OEM deck in the dash there is a bucket load of space to hide things.

or if your processor is adjustable, using the space in front of the gear stick is an option as well to put stuff (look in my profile and see what i put there)
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Zimmo
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Postby Zimmo » Sun Oct 14, 2012 10:39 pm

Thanks for the advice!
Right now ive actually just put the mount for the amps in, i was seriously considering the seats as a mounting place, didnt even consider behind the HU
Do you think that running all these wires to the boot (ie power on one side and the signal on the other) then having the speaker wires coming back is a big risk for noise?

Oh and its one 1000W Kicker and an 800W Rockford amp i'm using

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Postby Fitter » Sun Oct 14, 2012 10:44 pm

power and signal should always be kept seperate.

1000w and 800w... but what rms?

people look in my car and see 2x 6000w mono amps and think "holy crap" but then i tell them the RMS value (7200rms) and they calm down a little lol
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Zimmo
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Postby Zimmo » Sun Oct 14, 2012 10:53 pm

From what I've gathered i think its 1500W RMS in total

So just a little bit less then what you've got :P

Yeah, the signal coming from the head unit is on the passenger side, i'm gonna post the next bit i did tomorrow i just can't be bothered doing the rest tonight!

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Postby Fitter » Sun Oct 14, 2012 10:55 pm

thats understandable lol

kicker under rate their amps. in the box is a birth certificate stating what the tested RMS value is :D

but remember, they do it all at 2ohm, not 4ohm

so when u go to match subs to the amp.... 95% of subs are 4ohm
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Zimmo
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Part 2 Signal Wires

Postby Zimmo » Mon Oct 15, 2012 10:16 am

Image
This is how step 2 began with my dash in a million pieces, i needed to get to the 8 speaker wires coming out of the stock unit.
As i mentioned before, i'm using the head unit that comes standard, and i was wary about using a new unit.


Always disconnect your battery first!!
Basically from the stock connector i ran the speaker wires into a set of 2 aftermarket 8 pin connectors,.
The Connectors can be switched so that for the moment i can continue using my speakers (Stock Mode), then in the future i can switch it over by simply swapping plugs!
Also i 'split' the signal from the rear channel to use for a sub-woofer channel on my signal processor.
These four wires for the sub are always connected regardless if the connectors are in 'Stock Mode' or otherwise! :)
Image
(On this photo Red is IN & the Plug with the blue arrow is the one that can be swapped!)

This is The Guide i used, the first colours are the factory wires, the second being the colours i chose for the run to the back of the car
Front Right
+ White/Red =Red
- Black/Red =Brown
Front Left
+ White/Blue = White
- Black/Yellow= Black
Rear Right
+ Yellow/Red = Orange
- Grey/Red = Yellow
Rear Left
+ Yellow/Blue = Blue
- Grey/Blue = Green
Subwoofer Right
+ Yellow/Red = Orange/Grey
- Grey/Red = Yellow/grey
Subwoofer Left
+ Yellow/Blue = Blue/Grey
- Grey/Blue = Green/Grey

NOTE: THIS IS ONLY A GUIDE PLEASE VERIFY IF YOU HAPPEN TO USE THIS AS A REFERENCE!

Alright so then finally came time to chop the wires or as i thought 'The Scary Bit'
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As you can see i was cutting max 2 wires at a time and using a AA battery to test that i had snipped the corresponding (+&-) wires.
All i had to do was crimp the connector pins to the ends of the freshly cut wires then plug them into opposite sides of a standard 8 pin connector.
Image
Image

Sorry about the quality of these photos, the harness with the messily taped wires is factory and as you can see it matches the blue harness so that i could simply plug it in and nothing would have changed.
It was simply a case of plug and play with my pre wired connectors and finally routing the wires to the back via the passenger side of the car!
Image
:D :D

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Postby mattywired » Tue Jul 09, 2013 7:31 pm

Nice write up :)
Well done. Tomorrow im doing mine after work if i get the time to. Only using 8g wire though :/ may be a bit easier getting that through the fire wall grommet :)

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