Shut cigarette lighter off when key is off

[Ingallspw]

I have a device that requires to be plugged in to the cigarette lighter. I don't drive the car everyday sometimes maybe not even for a week or so. If I forget to unplug it, the battery will die. 

 

In my old GMC Truck i hooked up the cigarette lighter to the wire that feeds the radio when the key is on and that worked fine. 

 

I planned to do the same here... I tried to find the same wire on this radio but I'll be honest I only found one radio wire being fed 12v and it was constant.  

 

Anyway... Does anyone have any ideas how to get the lighter to shut off with the key?

 

2010 Ford Fusion SE 2.5L

 

(On foreign vehicles the power to the cigarette lighter was killed with the ignition key which is my goal)

[Grampy]

I have 2010 wiring diagrams.  I too have things I don't want draining the battery.  the way I power them is use the cigar lighter as "power", but put a relay in that comes "on" when key is in run.  If you are still interested I

can post the drawing.

[Ingallspw]

I would really like to see the diagram! The relay option seems like a good plan. 

[Ingallspw]

15 hours ago, Grampy said:

I have 2010 wiring diagrams.  I too have things I don't want draining the battery.  the way I power them is use the cigar lighter as "power", but put a relay in that comes "on" when key is in run.  If you are still interested I

can post the drawing.

I would really like to see the diagram! The relay option seems like a good plan.

[Grampy]

Gonna take more than 1 post:

1st we see the cigar lighter and "power point" are fed separately and always hot (F22 & F29) {page 44-1} 
Next I show the pinouts for connector C3256  pin one (green / red 22 gauge wire) is hot in run and start (ref other drawings later)
next is the location drawing of components in the console.

What I did, I used the wire @ C3256 to power a relay, the (new) relay controls the power to the cigar lighter  via pin 1 of C319 {Grey Red} (cut the wire and wired the relay between .  I used the  wire @ pin 3 (Black White} of C319 as the ground for the relay.

Fuse F41 is powered thru the "Accessory delay relay the prints (pages 13-11 & 13-12) connect thru triangle Z  then on to pin 1 of C3256.

So in my car I replaced the power point with a USB connector for mine & my wifes phones.  When you start the car it is on, when you shut it off it stays live along with the radio / power windows etc until the accessory delay timer kills 'em (i.e. you open the door)

 

Edited October 14, 2022 by Grampy
update print page numbers for clarity

[Grampy]

The other 2 drawings / prints

You may thin C219 would be a descent place to cut the wire NOPE it is a HUGE connector, hard to get to.

In the console there is plenty of room to "hide" the relay you added.

 

Edited October 14, 2022 by Grampy

[Grampy]

Diagram of a typical 12V SPST relay  (a SPDT will work also, they generally cost about $5 each)

[Ingallspw]

Perfect! These diagrams are great. Where did you get them?

 

I will give this a shot and let you know how it goes. 

 

By the way, Thank you! And great job!

[Grampy]

Usually ebay,

When I picked my (used) 2010 Milan, I got the shop manuals, I do 95% of the  work on my cars myself, => I try to have the shop manuals for all the vehicles I own. 

Came in pretty handy when I added power trailer towing mirrors to my F150 XL (the harnessed were not there for the mirrors, turn signals, heat or puddle lights) So I built them and the wiring diagrams helped me decide where to power everything.

Edited October 14, 2022 by Grampy