Does this wiring scheme look right???

Tekka · 03-11-2007, 05:57 PM

Well i ordered all the hardware needed and was thinking of how i should wire it all up... they haven't actually all arrived yet but i thought i i draw up a little plan... anyways if theres anything wrong please tell me..

also i forgot the most important thing... what kinda fuses and gauge wire should i be using??

-Turion64 MT-37 2.0ghz -25w
-MSI mATX board with oboard graphics
-100gb SATA or IDE 7200 rpm harddrive
-M2-ATX
-4 port USB 2.0 hub
-USB wifi stick
-USB bluetooth stick
-Pioneer 7800MP head unit
-DWW 700H VGA touchscreen

treetop777 · 03-11-2007, 08:02 PM

Your distro block has both ground and +12 going in and comming out? I never seen one like that.

The USB hub don't have to connect to the head unit.

I looks like you have power to the M2 comming from 2 places: the head unit and the distro block.

You have many things wrong, re-draw it using 2 distro blocks; one for +12 and another for ground.

post again and see if we can get it straight..

DarquePervert · 03-11-2007, 08:07 PM

There's a good writeup about choosing wire gage in the Car Audio forum.

Issues I see with your diagram:
The yellow line for ACC should go to an ignition-controlled 12v line if you want the M2ATX to turn your PC on/off with the ignition.
If you want to turn it on/off with the switch, then have as constant 12v with an inline switch.

The connection from the M2ATX to the motherboard isn't as simple as 12v and ground. It's the standard 20-pin ATX wiring harness.

I recommend powering the Xenarc 700IDT straight from teh car's 12v (IGN-controlled) instead of the M2ATX. Save the power from the PC's PSU for the PC and peripherals.

Quote: Originally Posted by treetop777

Your distro block has both ground and +12 going in and comming out? I never seen one like that.

Streetwires makes them for both +12v and ground. Fuses, too.
A very nice setup.

Quote:

The USB hub don't have to connect to the head unit.

It doesn't...

Quote:

I looks like you have power to the M2 comming from 2 places: the head unit and the distro block.

It looks like he's powering the Xenarc from the M2ATX, which I recommended against.

Quote:

You have many things wrong, re-draw it using 2 distro blocks; one for +12 and another for ground.

Not if you have one of these:

Tekka · 03-11-2007, 08:15 PM

thx guys this helps alot

I will definitely read up on the valet/ignition switch thingy,

i figure i just connect the trouchscreen to the usb hub which means one less extention cord that i will have to run to the back of the car

Yes i understand the 20 pin connection thing i just got a bit lazy drawing that

Won;t the wiring of the xenarc to the 12v line shorten the life of the screen? I read that the car doesn;t always supply a constant 12v and can fluctuate pretty high and thats the reason why i chose to supply it from the atx since it;s regulated.

also i am new to audio and didn;t know what a distribution block really was. I just thought it was a like a hub for power so i don;t have to run two wires thru the firewall

anymore tips will deffinitely help me out, i'll try to redraw the diagram tonight

thx alot

h3rk · 03-11-2007, 08:28 PM

I have 2 of those pioneer 12"s, neat. Seeing that you have a uATX mobo in your drawing, I'd side with Darque and say that if you want to regulate 12V to the LCD, use another PS. Id use something smaller like that M2ATX and then get a larger PS for the mobo (DSATX has been reported to pair up with the M2ATX in another thread, so that they both power up in harmony). But that's not firsthand knowledge...yet.

Tekka · 03-11-2007, 08:43 PM

wow thats a bit costly isn't it to use two power supplies? I'm using an Turion64 cpu which only uses 25w and i plan on using the onboard graphics and audio so i think an m2atx will more than be enough to power that thing. I plan on using usb bluetooth and usb wife sticks to further cut down on power useage...

DarquePervert · 03-12-2007, 05:40 AM

Quote: Originally Posted by Tekka

Won;t the wiring of the xenarc to the 12v line shorten the life of the screen? I read that the car doesn;t always supply a constant 12v and can fluctuate pretty high and thats the reason why i chose to supply it from the atx since it;s regulated.

Xenarc screens have built-in regulation. It will be fine running straight off the car's 12v. Lilliput brand screens,on the other hand, don't regulate. As such, they should be powered from a regulated 12v source.
Also, by powering the Xenarc on an ignition-controlled line, the screen will turn on/off with the ignition.

Quote:

also i am new to audio and didn;t know what a distribution block really was. I just thought it was a like a hub for power so i don;t have to run two wires thru the firewall

Basically, it is.
The unit I posted a picture of is a distribution block that includes distribution for both power and gorund, and includes a fuse socket for each individual component. It's a slick design and allows you to have all your power connections in one place for convenience.
There are other, simpler distribution blocks that don't include fuses or the connections to use a common ground like that Streetwires model. You could save a few bucks and get a simpler distro block anbd run grounds however you need to. You could also get two simple distro blocks, one for power and one for ground.

Tekka · 03-12-2007, 05:48 AM

Thx for all the help man.

i just used the xenarc picture becuz i couldn't find an easy pic to photoshop

This is the actual screen i plan on using, do you know if this is the same screen as the DWW-700H? It certainly looks like it. Should i just spend the extra $$$ and buy from digitalww?

http://cgi.ebay.com/In-dash-7-TFT-AV...QQcmdZViewItem

I think i will end up buy two distribution block with fuse since the streetwire unit is over $100

DarquePervert · 03-12-2007, 07:18 AM

Quote: Originally Posted by Tekka

i just used the xenarc picture becuz i couldn't find an easy pic to photoshop

OK, then!

Quote:

This is the actual screen i plan on using, do you know if this is the same screen as the DWW-700H? It certainly looks like it. Should i just spend the extra $$$ and buy from digitalww?

No. They are very different. The Xenarc 700IDT is non-motorized, for one.

Quote:

http://cgi.ebay.com/In-dash-7-TFT-AV...QQcmdZViewItem

Be aware that the seller is out of Hong Kong. If you have to return this for any reason, it's going to be expensive and a hassle, at the very least.

Quote:

I think i will end up buy two distribution block with fuse since the streetwire unit is over $100

$70 at CarDomain: http://www.cardomain.com/shop/search...eetwires+CBR44
It looks like they don't have the maxi-fuse version (CBR44M) in stock... They are all the same, really. It just depends on your preference of fuse type.

Tekka · 03-12-2007, 07:22 AM

oh sorry i meant is it any different from the DWW-700H?

I really wanna order from DigitallWW i mean it's only $20 more and free shipping also i heard the guy is really nice but they are always out of stock...

BTW isn;t it like really late for you to be answering my questions? ? lol it's 5:30 am here lol

thats what i call one dedicated Mod

DarquePervert · 03-12-2007, 07:32 AM

Quote: Originally Posted by Tekka

oh sorry i meant is it any different from the DWW-700H?

Still different.

Quote:

I really wanna order from DigitallWW i mean it's only $20 more and free shipping also i heard the guy is really nice but they are always out of stock...

Armen is a great guy to do business with. He is a one-man show, though. AS a result, replies to queries can be slow or overlooked sometimes. Be patient, polite and persistent and he'll get you taken care of.

Quote:

BTW isn;t it like really late for you to be answering my questions? ? lol it's 5:30 am here lol

thats what i call one dedicated Mod

It's 7:30am CDT right now. I've been up since 5:00a.
Damn Daylight Savings time!