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Wiring help for N20 Setup

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Old Mar 31, 2008 | 01:44 AM
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Default Wiring help for N20 Setup

Just wanted to know where the 12V hot, switched and ground locations are in the fuse panel inside the car. I know ive seen people talking about it here but cant quite remember where to find them. Thanks for the help in advance
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Old Mar 31, 2008 | 02:21 AM
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Passenger footwell.
Remove the kick panel.
Upper left side, there should be a factory pigtail with three wires taped off in duct tape. A Black, Yellow and Orange wire.









The Switched wire powers everything on the panel except the opener (via Relays for noids), that comes right from the battery for me.

Last edited by Beer99C5@FastbirdPerf.com; Mar 31, 2008 at 06:54 AM.
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Old Mar 31, 2008 | 08:53 AM
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Nice! I didnt even notice that while i was in there. It dont get any easier then that! Thanks man!
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Old Mar 31, 2008 | 12:10 PM
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Which one is the constant hot? Orange or yellow. Just thought id ask real quick because the battery is out of the car at the moment. Thanks again
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Old Apr 1, 2008 | 03:10 AM
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That plug or pigtail does NOT exist in my 04' coupe......any suggestions on what to do now? Anybody?
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Old Apr 1, 2008 | 08:29 AM
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Originally Posted by Novakain1970
That plug or pigtail does NOT exist in my 04' coupe......any suggestions on what to do now? Anybody?
You can tap the battery or the back of the alternator with a fuse link and use a relay to trigger your ignition switched hot off the ignition switch. You can use the pink wire for ignition to trigger the relay. It is the true ignition wire (hot while starting too). Use a good, clean chassis ground with a star washer.
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Old Apr 1, 2008 | 02:26 PM
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Originally Posted by BLOWNBLUEZ06
You can tap the battery or the back of the alternator with a fuse link and use a relay to trigger your ignition switched hot off the ignition switch. You can use the pink wire for ignition to trigger the relay. It is the true ignition wire (hot while starting too). Use a good, clean chassis ground with a star washer.
Mmm thats an idea. Is it possible to use a spade connector and plug it into one of the empty ignition spots on the fuse block??...if there is any I know there are a few open spots in the block but i dont know if they can be tapped into
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Old Apr 1, 2008 | 04:44 PM
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On another note is there anything wrong with getting power right from the battery if its going to an arm switch? I hate poking around with electrical crap in this car it makes me nervous, i dont need any electrical codes and gremlins popping up from touching something i shouldnt have!
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Old Apr 1, 2008 | 06:44 PM
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Originally Posted by Novakain1970
Mmm thats an idea. Is it possible to use a spade connector and plug it into one of the empty ignition spots on the fuse block??...if there is any I know there are a few open spots in the block but i dont know if they can be tapped into
Ok, when you have a full bottle with good pressure, the last thing you need is for your solenoids to not open. You need a good power supply with good voltage and ground to make sure that both solenoids open. You can tap on the battery tap in the fuse block under the hood with a 3/8 ring terminal and a fuse link. You can pick up a fuse link and the rest of your supplies at Walmart. The local stereo shops will charge you 10 times what Walmart charges for these miscellaneous parts. I chose to solder and heat shrink my connections as well to prevent any voltage drops in the circuit as well. use that battery tap to trigger a 30 amp Bosch relay and you will have the best guarantee of a good power supply on both battery and ignition. You can use a strip terminal to distribute the voltage if you like. You can also wire this entire thing without worrying about the electrical gremlins because you can do it all with the fuse removed from the fuse link. When you're done, simply pop in the fuse and test!
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Old Apr 1, 2008 | 08:23 PM
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I clearly understand using relays and i have them for both the noids and my heater. Im using a NX tps switch as well. The noids are grounded to the heads and the main power to the relays is right at the battery. (relays are mounted in the battery heat shield). Now i got the fuse assessory plug to plug into the #22 spot of the passenger footwell fuse panel to switch the relays on. (wired to the arm switch first). I did a search and found other people were doing that. Now my question is as follows...... Is the wire that is switched from 12volts on the relay to turn the relay on use low amperage? Im assuming it does and dosent use much load to turn the relay on. I only ask this because there is a maximum 10 amp fuse they reccomend putting in the assesory fuse plug. Any other imput is appreciated
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Old Apr 2, 2008 | 12:36 PM
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Originally Posted by Novakain1970
I clearly understand using relays and i have them for both the noids and my heater. Im using a NX tps switch as well. The noids are grounded to the heads and the main power to the relays is right at the battery. (relays are mounted in the battery heat shield). Now i got the fuse assessory plug to plug into the #22 spot of the passenger footwell fuse panel to switch the relays on. (wired to the arm switch first). I did a search and found other people were doing that. Now my question is as follows...... Is the wire that is switched from 12volts on the relay to turn the relay on use low amperage? Im assuming it does and dosent use much load to turn the relay on. I only ask this because there is a maximum 10 amp fuse they reccomend putting in the assesory fuse plug. Any other imput is appreciated
Low current? Absolutely. Bosch relays typically only draw .125 -.300amps and you will be using the switched 12v only to control the relay. This again will help prevent interference with all other electrical circuits in the vehicle i.e. gremlins.
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Old Apr 2, 2008 | 12:38 PM
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Also, you will either need more than 1 fuse link or 1 large fuse link to supply your entire system. I would recommend a minimum of 8ga fuse link for your main supply.
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Old Apr 2, 2008 | 04:41 PM
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Ok i got everything hooked up and it worked at the flick of a switch! Programming the NX TPS switch was cake as well! Thanks for the help. I cant wait to get this thing to the track and see what it can do
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Old Apr 6, 2008 | 03:36 AM
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Beer, can a put a copy of your wiring schematic onto my web site?
It's as nice as the one full diagram I have there. We wish we could link
the original poster to my site and wiring section, but I can't for
the time being. Oh well, soon.
Robert

[QUOTE=Beer99C5;1564792168]


Here's mine:

Robert

Last edited by Robert56@RNS; Apr 6, 2008 at 03:51 AM.
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Old Apr 6, 2008 | 03:44 AM
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Yes Robert no problem. I am going do some slight changes to it (add opener switch, probably move the trick gauge "Stage" sensors to the ground side of the noid), but the file name will stay the same.
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Old Apr 6, 2008 | 03:49 AM
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Thanks Buddy. I added the one from my site that memeber Mr Jones did, in the above post.
Robert
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