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Replace the Vanagon Cigarette Lighter with a USB Port

By Jeffrey Lee 

Update your loose lighter socket (and optional DIN socket) with modern 12-volt power and USB ports

Many early-1980s Vanagon dashboard cigarette lighter sockets are slightly larger than North American plugs, making for a sloppy fit when using modern 12-volt phone chargers, lights, dashboard fans and other accessories.

In addition, some Vanagons are also equipped with a DIN receptacle, a small enigmatic electrical ‘silver socket’ similarly mounted to the dashboard near the glovebox, and commonly used in Europe for 12-volt accessories. Sadly, accessories which can utilize this DIN plug are nearly impossible to find in North America, so the socket typically goes unused here.

Fortunately, both these power sockets can be rather easily updated with better fitting and more useful modern sockets; I opted for one standard cigarette-lighter socket, plus a modern dual-USB port for charging digital devices. Both sockets are close enough to the glovebox that charging cords can easily be routed to your electronic toys even when safely tucked away inside the glovebox.

We’ll start by removing the original sockets, enlarging the mounting holes in the dashboard, adding new connectors to the existing wiring, then finish by mounting the new sockets.

PARTS & MATERIALS

  • 12-volt Panel-Mount Socket (cigarette-lighter type)
  • 12-volt Panel-Mount Socket (dual USB socket device charger)
  • Fully-insulated 16-14-gauge female spade electrical connectors, .25″ tab

TOOLS

  • flat-bladed screwdriver, very small
  • electrical wire cutter/stripper/crimper

Optional Tools:

  • Dremel-type motor tool w/ metal grinding bits
  • 22mm deep socket
  • electric drill & step drill bit large enough to fit new sockets (approx. 1.125″ or 29-30mm)

Such power sockets can see heavy usage in a Camper, requiring extra durability, so I selected a matched pair of heavy-duty marine outlets designed for use in boats. These outlets included optional heavy-duty mounting plates and snap-in water-resistant rubber covers, both of which I found to be unnecessary.

Step 1: Remove old cigarette lighter socket

As always, when working on a vehicle’s electrical system, disconnect the battery to prevent shorts and shocks. If your Vanagon is equipped with a second (auxiliary) battery, disconnect this, too.

It will be helpful to completely remove the glovebox from the van, so empty it out and unclip the two plastic retaining straps located in the front corners; pivot the glovebox completely downward until it can be disengaged from the hinge bracket and removed.


Reach up beneath the dashboard and wriggle loose the plastic wiring connector from the back of the cigarette-lighter socket.

To remove the original cigarette lighter from the dashboard, insert a very small screwdriver into the socket and carefully pry loose the two metal tabs locking the metal inner portion of the socket to the plastic outer surround. The metal socket must be removed first, allowing the plastic ring to follow.

Step 2: Enlarge mounting hole

Try fitting the new cigarette-lighter socket into the mounting hole; if it fits, you’re good to proceed. Mine was too large so I needed to enlarge the hole in my dash using a small handheld Dremel motor tool and a grinding bit. I recommend covering the seats and floor with plastic sheeting to catch the inevitable metal chips while grinding or drilling.

Step 3: Connect wires to new power socket

Fish the wiring connector out through the mounting hole and carefully cut the connector from the wires.

Depending on the model year of your Vanagon, you may have a variety of wiring configurations; in general, there should be two Brown ground wires, one or two Red Positive wires, and possibly a Blue wire for the optional green illuminated surround.

When rewiring the new cigarette-lighter socket, keep the Brown ground wires together, and utilize the same Red wire(s) for the power supply. If your new socket includes an illumination feature, utilize the Blue wire for this; if not, be sure to securely cap off this wire with a wire nut or electrical tape.

Strip the wire ends, insert them in their respective fully-insulated female spade connectors, and crimp securely.

Step 4: Mount new power socket

Prepare to mount the new socket by reaching within the dash and slipping the locking retaining ring over all the power wires.

Draw the wires back out through the mounting hole and connect all the wires to their respective spade terminals on the back of the new socket: Red to (+) Positive, Brown grounds to (-) Negative, and Blue to optional illumination terminal.

Insert the new socket into the mounting hole, be sure it is oriented straight, then thread the retaining ring onto the back of the socket from behind the dash; tighten securely.

If only replacing the cigarette-lighter socket, reconnect the vehicle batteries and test the new power socket.

Your van may also have an unused European DIN socket, or you may simply wish to install an additional power or USB socket; leave the batteries disconnected and continue below:

Step 5: Replace DIN power socket

The European DIN socket utilizes its own independent power supply, but replacing it is nearly identical to the cigarette-lighter socket above except for a few notable differences:

a. The DIN socket is mounted to the dash using a retaining nut which must be removed using a 22mm deep socket from behind the dash
b. The DIN socket’s mounting hole is only about .75″ (19mm), so you’ll need to enlarge the mounting hole quite a bit to fit a new socket.
c. Originally, the DIN socket is grounded via the metal dash structure, so you will find only a single (+) Positive power supply wire. When replacing it with a new power socket, I suggest improving this by running a dedicated ground wire to one of the crown-shaped grounding points mounted to the vehicle chassis, located behind the dash near the driver’s left knee.

As mentioned above, this space can accept a second conventional cigarette-lighter socket, or a modern USB port; I chose a slick double-USB port for maximum charging capabilities.


I used a step bit designed for neatly drilling large holes in sheet metal, which worked quite well. First, measure the outside diameter of the shank of your new USB socket (in my case, approx. 1.125″ or 29-30mm), then find the corresponding ‘step’ on the drill bit. Wrap a section of tape around the bit to mark the proper depth to avoid drilling too deep/wide. When done drilling, smooth the hole edges using the Dremel grinding bit or emery cloth.

Install the second new socket as outlined above, utilizing the original wiring, then reconnect the vehicle batteries and test the new power sockets.


After a few camping trips with our new power sockets, we couldn’t be happier. Cigarette-lighter-type power plugs now remain firmly connected and no longer rattle loose, and the double USB power socket keeps all our electronic devices powered up while travelling.

This simple, affordable project is an easy way to modernize the ill-fitting or outdated power sockets of your classic Vanagon!

What do you think? Leave a question or comment below, and use the buttons to share with your friends!

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16 Comments
Categories : Electrical, Modifications, Travel Electronics, Workshop
Tags : Cigarette Lighter, Power Supply, USB
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Comments

  1. Daniel Minskey says:
    August 17, 2017 at 7:50 pm

    great how to…violet will be getting this upgrade

    Reply
  2. Valdoki says:
    August 18, 2017 at 3:42 pm

    Awesome tip . I’ll try to do in my Vanagon .

    Reply
  3. Tom says:
    June 29, 2019 at 11:50 pm

    Thanks for the post, informative and confidence inspiring. Excellent documentation.

    In my installation I found I needed to keep the dust cover – I was unable to fully tighten the retintion nut on the outlet without it. The little rubber ring was thick enough to resolve the issue.

    Reply
    • Jeffrey Lee says:
      June 30, 2019 at 1:00 am

      Yes, the sheet metal of the dash is quite thin, and some USB sockets may not fully tighten. The dust cap, or even just the attached washer, is a good solution!

      Reply
  4. Randy Wiederhold says:
    May 28, 2020 at 12:40 am

    Thanks – I plan to do this.

    Do you know if the DIN outlet is switched with the ignition or not? If it is I might get an outlet that displays the voltage – but if it isn’t I wouldn’t want the light from it on all the time.

    Reply
    • Jeffrey Lee says:
      May 28, 2020 at 2:31 am

      I cannot seem to find the correct wiring diagram at the moment to confirm, but I am nearly certain the DIN socket is under constant power, just like the adjacent cigarette lighter. You could confirm this by connecting a test light or voltage meter between the DIN socket’s center contact and a nearby ground; then turn the ignition On-Off to test.

      You could always add a simple inline toggle or slide switch to cut power to the DIN socket when not in use, then turn it on when needed.

      Hope this helps!

      Reply
      • Randy Wiederhold says:
        May 28, 2020 at 6:18 am

        My battery slowly drains when I don’t take it out of town. I think I’ll just do without the voltage meter. The kitchen already has a less precise voltage meter which is sufficient. Recently added a plug for charging, which makes me less likely to put off charging it. thanks

        Reply
  5. Dan says:
    June 17, 2020 at 4:07 am

    Thanks for the article. It helped with installing a USB plug with a voltmeter. One thing though, when I started the car I saw smoke come out of the driver side dash. After that I cut the blue wire and it seemed to go away. Was it because I wasn’t supposed to connect the blue wire? Any info would be great. Thanks!

    Reply
    • Jeffrey Lee says:
      June 17, 2020 at 1:56 pm

      Without knowing exactly how you connected the Blue wire, it’s difficult to say whether it was correct. This wire only powers the illumination feature on the original lighter. If your new USB-voltmeter instead is designed to draw illumination power from the Red main supply, then the Blue wire should not be used; just cap it off with a wire nut and tuck it securely out of the way.

      Hope this helps!

      Reply
  6. Larry says:
    July 2, 2020 at 5:21 pm

    I’m considering this upgrade. I noticed you did not use the Trim Bezel. I like that look too. But was there a reason why you didn’t use it, or does it matter either way? I’m curious whether it needs the Trim Bezel to tighten securely.

    Reply
    • Jeffrey Lee says:
      July 2, 2020 at 5:46 pm

      No, the trim bezel is not needed, and the socket fits well even without it.

      It’s just a matter of which appearance you prefer!

      Reply
  7. Larry says:
    July 3, 2020 at 10:25 pm

    I just finished installing the recommended dual USB. It was way too easy to install. Question: The little green light stays on all the time. Does this draw much power (I don’t think so). What’s your take on it? Thanks

    Reply
    • Jeffrey Lee says:
      July 3, 2020 at 11:58 pm

      There are a few different versions of this USB socket, all linked on the same Amazon product page. The one I installed includes the green LED monitor light, and I have not found it to cause a significant current draw if the van is used every few days or so.

      If it’s a concern, or if you find the LED annoying at night (my wife sometimes does), there’s also a version (Model 1045) without the LED: https://amzn.to/3dYbmyr

      Reply
  8. MATT says:
    April 16, 2021 at 12:36 pm

    Thanks for this! I installed a voltmeter dual port USB socket but I now have a mystery problem where the power to the USB socket goes off when the headlights turn on…any ideas?

    Reply
    • Jeffrey Lee says:
      April 16, 2021 at 2:01 pm

      Matt, depending on where you tapped into the Vanagon’s overall power system, it’s possible that the headlights, which draw a lot of power, are simply ‘hogging’ the available current, leaving the USB port without sufficient power. If the USB port is now on the same circuit as the headlights, try moving it to another circuit instead.

      When trying to isolate electrical problems, it can be helpful to *temporarily* connect various components to other circuits. A pair of homemade Mini Jumper-Cables, like those shown near the bottom of this page, allow you to quickly and easily try different circuits & setups:
      https://campwestfalia.com/emergency-board-vanagon-tool-kit/

      Hope this helps!

      Reply
  9. ShawnO says:
    September 10, 2021 at 6:20 pm

    Hey Thanks for this set of instructions. I had changed the cig lighter to a USB earlier this summer but needed the cig style socket for the new ARB LED light in the awning. Changed the DIN socket to the new power socket and grounded to a cleaned spot behind the glovebox. Works great.

    Reply

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