12vdc power feed
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5th Wheeling
Joined: Jul 2020
Posts: 28
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12vdc power feed
I have a 2021 supercab F250 4x4 Lariat, with the 7.3L gas engine, and I want to add a 12VDC "Cigarette plug" outlet under the passenger side dashboard (under the glove box), so I can more easily power some portable accessories. I have the outlet, and general location figured out, but I was hoping for some help about where I can most easily tap into a +12vdc feed (need ground also, but that is easier to solve). I would prefer a DC feed that is only active when the key is either in the aux position, or the engine is running, i dont want a constantly on outlet, so I dont risk battery depletion. I dont have any electrical diagrams, and things are packed in pretty tightly, I dont want to start cutting bundles or wires until I have no other choice. Anyone have suggestions, or a diagram that can be shared, I would be grateful.
Fleet Mechanic
Joined: Jul 2008
Posts: 1,937
Likes: 1,221
From: Southern Crescent
There should be factory installed pass through wires, although I can tell you from personal experience finding them can be a challenge. If you have upfitter switches you could use one of those. You would have the engine on/accessory on option and the ability to turn it off with the upfitter.
My 2022 XLT with a console has a 12 vdc outlet in the bottom right front of the console storage bin. Would using that work for you? (assuming you have that)
My 2022 XLT with a console has a 12 vdc outlet in the bottom right front of the console storage bin. Would using that work for you? (assuming you have that)
Tuned
Joined: Jun 2019
Posts: 320
Likes: 52
Did you get the memo? For my dash cam, I used the aux fuse block located behind the passenger kick panel. I used a fuse tap where a fuse would normally go for a feature I didn’t have (heated steering wheel) and matched the amperage rating.
Tuned
Joined: May 2007
Posts: 276
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From: Western Mass
Thread Starter
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5th Wheeling
Joined: Jul 2020
Posts: 28
Likes: 1
(edit). Shortly after posting this I realized your actual inference of “fuse taps” , I thought it meant repurpose the fuse socket. I now realize they are commercial products readily available from busman or others, to create the circuit I need. Another case of “learn something by trying to fix something”
Tuned
Joined: Jun 2019
Posts: 320
Likes: 52
Sorry the memo comment was sparked by your screen name and the movie Office Space.
Taps are convenient because they have two fuse holders; one for the original circuit you are tapping and a second for the circuit you are creating. In my case the original circuit wasn’t used because I didn’t have that option installed.
Sample fuse tap
Different blade fuse sizes
Taps are convenient because they have two fuse holders; one for the original circuit you are tapping and a second for the circuit you are creating. In my case the original circuit wasn’t used because I didn’t have that option installed.
Sample fuse tap
Different blade fuse sizes
Thread Starter
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5th Wheeling
Joined: Jul 2020
Posts: 28
Likes: 1
Sorry the memo comment was sparked by your screen name and the movie Office Space.
Taps are convenient because they have two fuse holders; one for the original circuit you are tapping and a second for the circuit you are creating. In my case the original circuit wasn’t used because I didn’t have that option installed.
Sample fuse tap
Different blade fuse sizes
Taps are convenient because they have two fuse holders; one for the original circuit you are tapping and a second for the circuit you are creating. In my case the original circuit wasn’t used because I didn’t have that option installed.
Sample fuse tap
Different blade fuse sizes
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More Turbo
Joined: Oct 2017
Posts: 562
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I used the passenger kick panel fuse block and an "add a fuse" to get switched power for my dash cam on my 450. Easy place to get power and a ground in the same place. Just have to find a properly rated fuse that's on the ignition circuit.
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Tuned
Joined: Jun 2004
Posts: 319
Likes: 37
There should be factory installed pass through wires, although I can tell you from personal experience finding them can be a challenge. If you have upfitter switches you could use one of those. You would have the engine on/accessory on option and the ability to turn it off with the upfitter.
My 2022 XLT with a console has a 12 vdc outlet in the bottom right front of the console storage bin. Would using that work for you? (assuming you have that)
My 2022 XLT with a console has a 12 vdc outlet in the bottom right front of the console storage bin. Would using that work for you? (assuming you have that)
Tuned
Joined: Jun 2019
Posts: 320
Likes: 52
If you want a constant hot you can wire it direct to battery with an inline fuse holder (adding a relay if necessary for higher loads). Otherwise if you have upfitters you can change a fuse position in the relay box to make some of the switches (the last two higher amperage relays iirc) always hot and wire to the relay.
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