The most recognizable difference between Euro and USA DS’s for 1966 and 1967 was in the exterior lighting. The headlights were changed to standard 7-inch USA sealed beam lights with special buckets in the front fenders. Euro cars had Halogen headlights made by either Cibie or SEV Marchal. We have photos of new cars at ports with no headlights at all, indicating that the sealed-beam lights were installed after the cars arrived in the USA. We have been told that the USA headlights were installed by Citroën personnel, before the cars were handed off to the dealers.
The Euro front turn signals (made by either Seima or Axo) were also replaced with round units made by Lucas. The front turn signal housings were chrome-plated on Pallas models and were plain aluminum on standard cars. The lens was amber-colored glass, held in position with the rubber gasket. Clear glass lenses can be found on some cars, but per the parts books, all USA cars had amber lenses.
1966 DS’s arriving at the Port of Seattle - headlights removed
USA front turn signal - Lucas lamp with aluminum housing (chrome used on Pallas models)
On USA sedans in 1966 and 1967, the rectangular Euro tail lamps made by Seima were replaced with round units made by Lucas of England. The Lucas tail lamps were standard lights used on many British cars of the era.
Typical USA rear lighting as would be found on 1966-1969 cars - Lucas tail lamps (lenses held on with two Pozidriv screws), Lucas license plate lamps
According to the parts books, the roof-mounted rear turn signals on 1966 sedans in the USA were Lucas units where the lenses were removed by twisting the lens counterclockwise. In 1967, the parts books indicates that the lamps changed to one similar to that used for the brake and tail lights (lenses held on with screws). While this is generally true, there seem to be exceptions where 1966’s had the later turn signal lamps and maybe even cases where 1967’s had the earlier twist-off lenses.
Lucas lamp with twist-off lens - used for roof-mounted rear turn signals on USA and Canadian 1966 DS sedans (and maybe a few 1967’s)
USA: 1966 and perhaps some 1967
USA: 1967 to 1969
USA: 1970 to 1972
US and Canadian station wagons received a special rear license plate holder on the lower tailgate that was designed to fit USA or Canada license plates (US and Canadian license plates are are almost the same shape/size). This holder was hinged such that the plate could be viewed with the tailgate open or closed. The license plate lights on the hinged panel were the same Lucas units that were used on USA sedans.
Typical USA wagon with folding license plate holder - notice plugs installed in the holes for the Euro license plate lights
Lucas license plate light - used on all 1966-1972 DS sedans and wagons for the USA
Details of the hinging rear license plate holder on USA/Canadian wagons
DS wagon tail lights in 1966/1967 were the same as Euro models, made by either Seima or AXO. Memories and photos suggest that the Seima versions shown in the photo were the most common in the USA.
Seima tail lights as found on a USA 1966/1967 wagon
USA convertibles in 1966/1967 had the typical USA lighting but lost the boomerang turn signals mounted on the rear deck. Instead turn signals were incorporated into the tail lamps using dual filament bulbs and receptacles. USA convertibles also had the USA turn signal switch, speedometer, etc.
USA convertible without boomerang turn signals
Boomerang turn signal on rear deck of a Euro convertible
The parts books suggest that Canadian DS’s in 1966/1967 had full Euro lighting. However, this is clearly in error. There are plenty of memories and photos showing 1966/1967 Canadian DS’s with some of the USA-style lighting. Two such examples are these period photos, one is the Montreal showroom at 4006 Rue Sainte-Catherine Ouestand the second is a popular Canadian publicity photo, taken at the Mount Royal Observatory in Montreal. One can clearly see the USA-style Lucas tail lamps and turn signals (both front and rear).
Montreal showroom with Canadian DS’s with USA-style lighting
1966/1967 Citroën publicity photo in Montreal showing a Canadian car with USA front turn signals but with Euro-style headlights.
Model year 1967 was the year that Euro DS’s received LHM hydraulic fluid. LHS2 (brake fluid) was retained until 1969 ½ on USA and Canadian cars.
DASHBOARD AND WIRING
The only substantive differences on the dashboard and wiring on USA models in 1966/1967 were that the speedometer was calibrated in MPH and the turn signal switch was different (Euro turn signal switches tended to have the flasher unit built into the switch, whereas USA cars had an external flasher unit). The external turn signal flasher unit was made by Klaxon and all of the examples we have found have "USA" stamped on them. The flasher unit was installed with a screw into the lower dash shelf (see photos).
Cancelling the turn signal on USA switches on cars between 1966 and early 1969 was accomplished by pulling the lever aft, toward the driver.
KLAXON turn signal flasher unit as found on a 1966 USA DS (part number DM 575 100A)
Canadian cars had the speedometer calibrated in miles-per-hour (MPH). The parts books show that Canadian cars had the Euro turn signal switch and associated wiring, although it seems more likely that they had the USA components.
Tires delivered on DS’s intended for the USA were different than tires delivered on Euro versions. For one thing, all USA sedans and wagons always had the same size tire on the front and rear: 180-380. Most of the Euro models had narrower tires in the rear. Note that the 180-380 size is also referred to in the English convention as 180-15, later called 180HR15.
All 1966/1967 DS sedans and wagons sold in the USA were equipped with 180-380 Michelin XAS tires, front and rear.
We believe that all Canadian 1966 to 1972 sedans and wagons were all delivered with 180-380 XAS tires (front and rear).
Michelin 180-380 XAS with asymmetric tread
Owners Manual from a USA 1966 Wagon - specifying Michelin XAS tires