Looking for 12v line in engine bay - Audio & Electronics Forum

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Looking for 12v line in engine bay
Monday, June 01, 2009 7:09 AM
Hi guys, I'm in the middle of installing my Hahn Portfueler and I am going to say it straight up. I HATE WIRING! I'm at my last step in terms of electrical, and I just need to source a 12v that turns on when the key is set to run.

When I searched I came up with this, which makes no sense to me:
"maybe it should help you
C1-19 PNK 639 Ignition Positive Voltage (2) PCM/IGN Fuse"

Is that talking about the pink wire on the ignition control module? I can't decode 100% what that is supposed to mean.

Ignore my crappy pic it's about 2 years old, it was the best example I had. Ideally I'd like to connect to a wire that runs to that connection block thing at the top left of the picture (with all the wires going into it).


Would anyone be able to explain how to tell which wires going into that thing are seeing 12v when the car is running without baring them all? Or maybe help me pick one to use. There are about a million pink wires going into that harness so that's kind of annoying haha.

Thanks!




" To study and not think is a waste. To think and not study is dangerous. "

Re: Looking for 12v line in engine bay
Monday, June 01, 2009 7:27 AM
Grab one of the ignition wires from the steering column. It's the thick pink one coming off of the harness on the underneath of your steering column. I'd use that one and fuse it.



Re: Looking for 12v line in engine bay
Monday, June 01, 2009 7:48 AM
I'd like to keep it in the engine bay if possible, it's just one less wire that I have to run inside the car, it's already a mess under there.



" To study and not think is a waste. To think and not study is dangerous. "
Re: Looking for 12v line in engine bay
Monday, June 01, 2009 9:49 AM
How much amperage does that portfueler pull?



Re: Looking for 12v line in engine bay
Monday, June 01, 2009 12:41 PM
Based on the info from this page, that I can gather its 16mA typically.

http://www.splitsec.com/products/aic1/aic1ds.htm



" To study and not think is a waste. To think and not study is dangerous. "
Re: Looking for 12v line in engine bay
Monday, June 01, 2009 1:00 PM
See that black fuse block to your right there? Guarenteed there's something you could tap off of there. List me what all you have.



Re: Looking for 12v line in engine bay
Monday, June 01, 2009 1:25 PM
any pink wire should do just make sure your not pulling from something that is loaded already maybe the pink wire for the reverse light sensor would be the best



JBO since July 30, 2001
Re: Looking for 12v line in engine bay
Monday, June 01, 2009 1:37 PM
Hold on there cowboy, I wouldn't pick just any pink wire. Some send data, some send AC voltage, yeah, you don't wanna do that.



Re: Looking for 12v line in engine bay
Monday, June 01, 2009 1:42 PM
I went and had a look at it, what do you think about using the BLO (Blower?) fuse? It's a 30A fuse.

Otherwise, for the smaller fuses there are:

PCM 10A
AC 10A
CRANK 10A
BLO 30A

And then the bigger fuses I have:

IGNITION 50A
BATT 1 40A
BATT 2 40A
COOLING FAN 30A
PCM/HVAC 50A

Then a bunch of relays. What do you think?



" To study and not think is a waste. To think and not study is dangerous. "
Re: Looking for 12v line in engine bay
Monday, June 01, 2009 1:43 PM
PS. Thanks for your help so far!! I can't wait to get this wiring stuff out of the way hahaha!!



" To study and not think is a waste. To think and not study is dangerous. "
Re: Looking for 12v line in engine bay
Monday, June 01, 2009 2:41 PM
I just checked all of those fuses with my multimeter and I don't think they are switched, I got a reading on every single one with the key out of the ignition.



" To study and not think is a waste. To think and not study is dangerous. "

Re: Looking for 12v line in engine bay
Monday, June 01, 2009 3:43 PM
Crap, those are all the fuses that feed into the cab to the ignition switch. I seriously would run just a small 18 or 16 gauge wire thru the power connector grommet and tap off the ignition pink



Re: Looking for 12v line in engine bay
Monday, June 01, 2009 4:16 PM


Lol... okay fine, what size of fuse should I be looking at getting? Again sorry for seemingly dumb questions, just never sure when it comes to electrical.



" To study and not think is a waste. To think and not study is dangerous. "
Re: Looking for 12v line in engine bay
Monday, June 01, 2009 5:09 PM
I would go with a 3 amp fuse. It doesn't need anything big, and you definitely would want to fuse that.



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