Home » The Citroën 2CV Light Switch Is Weird But Clever Like The Whole Damn Car

The Citroën 2CV Light Switch Is Weird But Clever Like The Whole Damn Car

Cs 2cv Lights Top
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Over the weekend I finally got the time to get the wiring on my 2CV actually, fully sorted out, all the bare wire spots covered, all the very janky splices fixed with proper heat-gun solder-seal splice connectors, all that, and as a result, all the lights and wipers and all the electrical stuff actually works now. It’s thrilling.

As I was getting all the wiring buttoned up, I was, of course, testing the lights and other electrical bits over and over again with the switch, which is, unsurprisingly, not like the light switches that are on pretty much every other car out there in the world. At first, they seem really strange, but once you open your mind, man, they actually make a lot of sense.

Vidframe Min Top
Vidframe Min Bottom

Don’t worry, I’m going to explain. Let’s start with a picture and a diagram! Here’s the switch:

Cs 2cv Lightswitch 1

…and here’s the various positions it can have:

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Cs 2cv Switchdidagram

Yep, that’s the horn on the end there. You push in to honk.

It’s really not all that different from the expected parking lights/low beams/high beams sort of switch you have on most cars, with the turn signal stalk used for low/high beams, but it is different enough.

First, there’s the terminology: there’s three labeled settings on the rotating knob: 0, V, and R. That stands for off, ville (town), and route (like, highway, or rural). That sort of translates to town and country, which you can sort of think about in terms of high and low beams, but it’s not really like that. They’re actually modes.

Remember, the switch moves forward and back as well as rotating positions. So you can think of the forward/back part as a low/high switch, but one that operates in the two modes, ville and route.

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When the rotating switch is on V, back means the small position lights in the headlights: I’ve written about these before, they’re similar to parking lights, and are also called sidelights or town lights, and they’re for driving in a well-lit part of town at night, when you need your lights to allow your car to be seen as opposed to lighting the road for you to see.

When the switch is on V and you push the lever forward, you get your standard low beam headlights. So, in town, in V, the forward/back motion switches between town lights and low beams.

Switch the rotating bit to R, and then you’re in route mode, and in this mode forward is still low beams, and back is high beams. So the way to think about V and R are modes, each with high/low settings, which are controlled by the stalk being either forward or back. The level of those bright/dim lights are decided whether you’re in V or R, with V being dimmer and R being brighter.

Cs 2cvlights Guide

So, this means low beams can be turned on in either V or R modes! It’s weird but it makes sense, too, because you can easily switch between bright and dim with the forward/back motion of the stalk, whether you’re in town or out on a dark back road. When low beams are on, rotating from V to R keeps the low beams still going, but pulling the stalk back now activates the high beams.

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There’s some good internal pictures of this strange 5-position switch on this site, if you’re curious.

Cs 2cv Lightswitch Day

Oh, one thing about the position lights: replacing those bulbs is a pain, but I think I figured out the trick. The bulb is really tiny, and goes in one of those push-and-turn sockets, but there’s barely enough room for my two smallish monkey fingers to get in there, through the main bulb hole.

Cs 2cv Poslights

What you have to do is position the bulb in there with two fingers first, then go back in with your thumb and index finger from the angle you see in the lower picture up there, and that gives just enough room to push down and twist. It’s a pain and if you have big fingers, you’re gonna need to bribe a kid to do this for you.

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Cs 2cvlightswitch Instruments

I’m just thrilled to see some progress, and glad to have the wiring behind me. I love seeing the absurdly tiny instruments illuminated, too, but they’re way brighter in this picture; I may want to swap the little candle-level incandescents in there with a bright LED so I can read the damn things.

Cs 2cv Lightswitch Tails

Next step: carb cleaning, I think. I want to get this thing on the road so badly!

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Ben Eldeson
Ben Eldeson
1 month ago

I probably would not take that thing on the freeway. Especially not in North Carolina where every other vehicle is a giant lifted truck.

The Bishop's Brother
Member
The Bishop's Brother
1 month ago
Reply to  Ben Eldeson

Correctly tuned, flat, no wind, a 2CV will hit 65mph. Will you want it to? No. You could not PAY me to drive mine on the freeway

Ben Eldeson
Ben Eldeson
1 month ago

You can say that about many old cars. I have a 49 Plymouth Super Deluxe with the factory, anemic flathead. I took it on the freeway. Once. That was a white knuckle ride. At 55MPH the car was pretty scary

Vc-10
Vc-10
1 month ago
Reply to  Ben Eldeson

My family had a Citroen Dyane (so… a slightly oversized 2CV) at our holiday home in Spain. My uncle drove it back to the UK a few years ago.

He went on the French autoroutes.

Madness.

It broke down in protest when it was leaving the ferry port in Portsmouth!

The Bishop's Brother
Member
The Bishop's Brother
1 month ago
Reply to  Vc-10

They definitely were seen on European autoroutes. But there’s no way I’d drive mine on a US highway. Several of its original horses have left the stable and around here, half of the vehicles on the road are semis or brodozers.

Pimento
Member
Pimento
1 month ago

My old Alfa has something kinda similar, but much more basic. It has a stalk behind the indicator stalk – rotate 180 degrees to turn the lights on, click down go to high beams.

Now that I think about it though, I don’t know if there’s a parking lights mode.. there must be, it has lamps for that. Maybe it’s click down with the main lights off.. I need to go have a play with that later. Once I’ve fixed the brakes.

Gurpgork
Gurpgork
1 month ago

Another quirky electrical device on a 2CV is the ignition switch. Instead of being operated by a key, a baguette is inserted into a recess on the dash and turned counter-clockwise. A safety beret must be worn at all times while operating your 2CV.

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