12V power source faq

For everything related to the inside of the car!!

Postby Gary » Thu May 18, 2006 5:46 pm

Just wire it from the battery.
You can make 2 distribution blocks.
One in the trunk connected to the battery.
One in the front (cabin) connected to the alternator.
Minimal wire = less headache
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Postby CMS-GT4 » Thu May 18, 2006 6:13 pm

If I plug it straight to the battery, how do I control it from turing on when the car turns on? I have been trying to decide how to put a switch on it to turn it on and off.
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Postby Gary » Thu May 18, 2006 7:34 pm

The nearest place you can hook up the voltage to trigger
the relay is at the auto antenna, ABS ecu, or fuel pump.
I would go with the auto antenna.
There is a grey wire coming from 15A cig & radio fuse to the antenna motor.
Use that wire to trigger the relay. It should have 12V when the key is in "ACC" or "ON"
Otherwise, you will need to run a small gauge wire from inside the cabin.
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Postby CMS-GT4 » Thu May 18, 2006 7:36 pm

Great info. I planned on taking out the electric motor anyhow. So, the switch for the WI pump would work perfect there...

is this thread stickied yet?
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Postby zblu81 » Wed May 31, 2006 9:12 pm

Gary, Where are you planning on buying that distribution block? Does it have two separate power inputs?
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Postby Gary » Thu Jun 01, 2006 12:27 am

Part number is CBR44M
Search for Streetwires CBR44M
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Postby zblu81 » Thu Jun 01, 2006 4:25 pm

thanks
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Postby CMS-GT4 » Wed Apr 11, 2007 3:53 pm

What about the fuel pump? Has anyone had their walboro fuel pump burn up by wiring it in the same way as in the directions?
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Postby Denver_whiteST185 » Fri May 11, 2007 3:39 pm

I just say this and though this info would be good to sticky. Please, if there's any informative threads that need to be stickie'd, just pm me
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(not really, i just own a completely UNmodified 91 civic dx that gets 45+ mpg now)
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Postby toayoztan » Fri Jun 22, 2007 11:17 pm

Hey guys. I plan on running a distribution block. I have 3 gauges and a spal fan to hook up. On the distribution block, i know i can double up gauges to run off one fuse, but my question is, how do i know how large of a fuse to put in in the distribution block? Do i look at the specs for the manuals, or do i just keep (within reason) adding a bigger fuse, til it quits blowing?

Also, i plan to hook up a bosch relay inbetween the battery and distribution block, and using a switch (such as antenna, radio, etc, like Gary mentioned) to complete the connection to the distribution block when i turn the car on. So my quesiton is, will the bosch relay hold the amperage, after hooking up all 3 gauges, and the spal fan? If i want to hook up more and more stuff, would hooking up yet another distribution block with another bosch relay be better? I think if i'm on the right track of thinking, if i hook up too much still to the distribution block, it'll pull to much amperage and blow the bosch relay...right?

I know how to set all this up and how to hook up relays, i'm just curious, again as mentioned above, what fuses to get for the distribution block, and if the bosch relay will hold up.

Or I might do with Simba did, put a big inline fuse in source. Then have bosch relays coming off the distribution block.

I have another question though...don't they have relays rated with higher amperage, say 50amps? Then all you would have to do is have one trigger going to that relay (inbetween the batt and dist block), and be done with it (which is the same idea that Gary mentioned..just rated higher amperage).

Thanks!

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Postby toayoztan » Sat Jun 23, 2007 12:17 pm

Okay so i was thinking of something like this. Is this okay? Where do i need to stick fuses?

Excuse the "detail", as i was bored and a little buzzed last night :)

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Postby 1BADGT4 » Wed Aug 01, 2007 7:28 pm

I would put fuses between the "Constant 12v source" and the assc.
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Postby GT4RC » Wed Aug 01, 2007 8:20 pm

1BADGT4 wrote:I would put fuses between the "Constant 12v source" and the assc.


Yes, and fuses are put in place to prevent burning up the wire that they are installed to, meaning the size of fuse required is relative to the guage of wire, and should always be installed as close to the source as possible, which is why many power distribution blocks integrate a fuse block. and make sure you install a fuse between the block and the battery, relative to the guage of wire.

Here is a fantastic site to reference to:
http://www.the12volt.com/
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Postby justjoe » Sun Sep 02, 2007 3:46 pm

I just got this so I could wire everything nicely..

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http://www.amotostuff.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=BS-5025&Category_Code=

It was really hard to find one with ATC fuses..
This can be run with or without the cover.. which is nice.

I know it is a pain to sit and run the relay and everything else, but I figure that once it is done, I will have it available for atleast 6 devices running inside the car.

And since I will be running an HKS boost Gauge (w/memory), a PLX AFR and a PLX display.. that will be 3 right there.
I will update with pics in the project thread when I am done with the install. (what a pain).

Then I will have to think about installing the Alarm!! :shoots: :shoots: :shoots:
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Postby Rick89GTS » Sun Sep 02, 2007 4:07 pm

Fantastic thread with tons of useful info :)
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