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Old August 8th, 2012, 08:50 AM   #1
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continuous 12 v to power plug?

*****SEE MY SOLUTION IN THIS THREAD FURTHER DOWN. PROBLEM FIXED AND IT WILL TAKE YOU 15 MINUTES!!!!
Love my Accord, hate the fact that Honda kills the 12 volts to the cig lighter/power outlet on the console when you turn the ign off. I like to leave things plugged in to charge them while I'm out of the car. Finally getting around to dealing with this issue.... Anyone know where there is a circuit/wire under the dash that I can tee into that is 12 volt live with ign on or off?

Last edited by wingdreamer; December 7th, 2013 at 04:15 PM..
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Old August 8th, 2012, 10:09 AM   #2
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no car manufacturer leaves 12v power still running with car off. You would have to tap straight into the battery. Which is stupid imo because if you don't have a switch to kill it, than it will draw all your juice.
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Old August 8th, 2012, 10:24 AM   #3
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you'll run a high risk of draining the battery out... but there should be a 12V continuous line somewhere in the ignition/key circuit. Afterall, how else would the power turn on when you turn the key? The line may not be 12V though... could be 3 or 5v.

The much safer route is to tap directly into the battery. Get a battery terminal that has multiple wire ports and replace your positive terminal. Run the line, with a FUSE, into the car and then you have your continuous power.
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Old August 8th, 2012, 10:38 AM   #4
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There are several unused fuse slots that have constant power, get a fuse adaptor(which Advance and other sotres sell) and run off that as long as the load is 20A or less.
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Old August 8th, 2012, 11:56 AM   #5
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op, you mean the functions you get in euro cars?
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Old August 8th, 2012, 04:30 PM   #6
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Most older cars had what he's looking for. Not just euros.
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Old August 8th, 2012, 04:35 PM   #7
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Charging a cell phone partially or an mp3 player... your never gonna drain it unless you needed a new battery anyway, especially V6's. I wish it stayed on as well.
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Old August 9th, 2012, 12:15 AM   #8
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Quote:
Originally Posted by nighthawk04v6 View Post
no car manufacturer leaves 12v power still running with car off. You would have to tap straight into the battery. Which is stupid imo because if you don't have a switch to kill it, than it will draw all your juice.
My 2004 Montana power plugs are live constant. Actually its only been my Honda(s) that shut off with the key... Just wanting to charge my blue tooth etc... small low draw items..... Wouldn't mind knowing where in the fuse panel I can find that constant on source to tee into.......
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Old August 14th, 2012, 01:37 PM   #9
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^^
the Ford truck at my job got the power 24/7 too
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Old August 14th, 2012, 09:14 PM   #10
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^^^ true my gmc truck from work keeps it on thats how i charge my work printer and laptop
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Old December 7th, 2013, 04:14 PM   #11
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Drives me nuts that I cant charge my bluetooth or phone when I shut off the car. Found the solution and its really simple. I did the below process on my sons 2003 Accord EXL, 4 cylinder, 4 door automatic....

WARNING: This worked for me on my car, but I have no idea if your year and model of Accord uses the same wiring. Proceed at your own risk!

1)Turn off ign and remove key. Pull the left fuse cover AND the kick panel out to fully expose the fuse panel.
From this point forward, "left" and "right" is based on looking directly at the fuse block, straight on....

2) Remove the relay in the top right corner, closest to firewall, in spot #32, marked "acc". On my car its a black relay, to the right of a brown relay, and to the left of an empty relay spot.
Look closely, there are 4 slots in the fuse block that the relay came out of (2 vertical on the left, and 2 horizontal on the right side). These slots would coincide with the pins on the relay you removed.

3) Here's the simplicity of this....I made up a jumper wire that consisted of a 2 inch long piece of 16 gauge wire, bare each end and crimp on a flat spade connector on each end.


4) Plug one spade end into the far left vertical slot and the other spade into the adjoining vertical slot to the right. **Do not use the two horizontal slots on the right side of the block**
You have now jumped 12 volts battery voltage directly to the wiring going to your 2 power plugs.

5) Leave the ignition turned off.... Plug a cell phone adapter into the front power plug to see that the led on it powers up. . Unplug one end of the jumper and you will see that the adapter led will shut off. Re-attach jumper wire and adapter will power up again. Remove the accessory fuse (in spot #9) and you will see the adapter power down again. Reinstall the fuse, powers up again. (relay may have been bypassed, but the circuit is still fused and protected).

6) Make sure that the loop of wire that you made up is tucked in and wont catch on the fuse panel cover when reinstalling, and reinstall the kick panel and fuse box cover. Try turning the ign on and off. led on adapter should stay on at all times. Toss the unused relay in the glove box as a spare.

You're done!

I cant believe it was this simple to do. I will be doing the same mod to my 06 Accord this weekend!

*****Update: Just did my 2006 Accord, V6 EXL w/Nav.... Exact same process as the 03. Relay was in the same spot, jumped the same 2 connections and same great results!*****
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Last edited by wingdreamer; January 6th, 2014 at 09:41 AM..
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Old December 7th, 2013, 04:36 PM   #12
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Relays are for dummies lol. I wonder what that smell is? Oh shi# is my car in fire?!!!!
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Old December 10th, 2013, 01:39 AM   #13
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A picture would help with this little diy. lol
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Old December 11th, 2013, 09:44 AM   #14
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This will cause a parasitic draw on the battery, jumper wires are for emergencies only!
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Old December 11th, 2013, 10:06 AM   #15
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what the heck is a jumper wire?
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Old December 12th, 2013, 08:20 AM   #16
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Jumping two terminals with a wire, that usually has spade or aligator connectors, is called using a jumper wire. When a relay fails, such as a fuel pump relay, you can use a jumper wire to make the connection so you arent stuck on the side of the road. It mustn't stay connected though, or parasitic draw will kill the battery.
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Old December 12th, 2013, 09:29 AM   #17
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thanks for the explaination
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Old December 13th, 2013, 07:52 AM   #18
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So my Chevy that has a continuous 12v outlet, from the factory, running a low powered led causes unnecessary parasitic battery drain? It's simply connecting two wires to create a continuous power supply. You don't have to be an electrical engineer to figure that out.
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Old December 13th, 2013, 09:24 AM   #19
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New vehicles don't come with jumper wires from the factory, but whatever not my car!
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Old January 5th, 2014, 11:25 AM   #20
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Quote:
Originally Posted by Ilovemyvtx View Post
A picture would help with this little diy. lol
let me know how to post pics on here and I will.

As for the other posts regarding issues with the relay..... a relay is not a fuse, nor does it protect a circuit. It is simply an on/off switch that controls power to a device. It does not "blow' when overloaded. That is the job of the fuse, which is still in place, and protecting the circuit. As for killing the battery....I have had this in for over 2 months now in 2 different Accords with no issues starting (-24C here on Thursday night!). It can only drain your battery if you decide to plug in a high draw accessory into your power outlet and leave the car. Nothing plugged into the power ports equals no draw on the electrical system (except oem keep alive memories).
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Last edited by wingdreamer; January 5th, 2014 at 11:35 AM..
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Old January 5th, 2014, 11:33 AM   #21
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Quote:
Originally Posted by Ilovemyvtx View Post
So my Chevy that has a continuous 12v outlet, from the factory, running a low powered led causes unnecessary parasitic battery drain? It's simply connecting two wires to create a continuous power supply. You don't have to be an electrical engineer to figure that out.
True, but your ECMs and clock/radio memory will kill a battery WAY before a single led indicator on our cell phone charger plugged into your power port.... No worries!!
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Old January 5th, 2014, 05:44 PM   #22
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You can see where I removed the relay. The 2 vertical slots to the left (12 volts in/out), and the other 2 slots (horizontal, on the right) are 12 volt supply/trigger for the relay, and a ground.





simple jumper wire installed, using ONLY the 2 left vertical slots.

Last edited by wingdreamer; January 6th, 2014 at 09:44 AM..
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Old January 5th, 2014, 05:47 PM   #23
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see fuse #9, near the lower right. this is the 15 amp fuse that protects the circuit.



The hardest part of the whole job is pulling off the panel that covers the fuse block. The relays are hidden in this pic, just above the fuses.

[url]http:

jumper wire made up.

Last edited by wingdreamer; January 6th, 2014 at 09:45 AM..
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Old April 6th, 2014, 12:16 PM   #24
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having a 12v outlet wired so it's hot 24/7 will NOT drain your battery. smh. darn rookies.

and as stated before you can leave a phone or an ipod plugged in and it won't drain your battery either.

just dont leave anything that draws a lot of current plugged in.
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Old April 6th, 2014, 05:22 PM   #25
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Originally Posted by WyattEarp View Post
having a 12v outlet wired so it's hot 24/7 will NOT drain your battery. smh. darn rookies.

and as stated before you can leave a phone or an ipod plugged in and it won't drain your battery either.

just dont leave anything that draws a lot of current plugged in.
Yup!!! Been 5 months now with both Accords and works great. My son can now charge his blue tooth, and phone while away from his car..... such an easy thing to do, and no, the battery doesn't go dead unless you leave something on... cant help people on that one.... Most North American branded vehicles have been this way forever.... just seems to be a Honda thing....
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Old January 29th, 2016, 12:54 AM   #26
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my 12v doesn't work. wanna start by checking the fuse. do you know where to access? underneath driver side?
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