2CV WIRING DIAGRAMS Page 1
The wiring diagrams on this page and the next may be useful to you if you wish to wire in auxiliary electrical equipment or part of your 'electrics' develops a fault. They were drawn following reference to an actual car but we cannot guarantee that your car is exactly the same.
The colour of wire used by CitroŽn was usually green or grey. Blue and yellow wire was used where a heavier gauge was needed such as for the alternator and starter motor. Brown wire was often, but not always, used for earth wires such as on warning lamps and usually had uninsulated spade terminals. It is not the colour of the wires which identifies them as regards their purpose. At the end of each wire, next to the rubber cover over the male or female 'bullet' connector, there should be a coloured plastic sleeve and it is the colour of this sleeve which identifies the piece of equipment fed by the wire. Our diagrams use text and lines which should correspond with these sleeve colours. Where 'spade' terminals are used, such as on the instrument panel, there is often a hard plastic insulation over the 'spade' and, again, it is the colour of this insulation which we use in the diagrams. Spade terminals on earthing wires are often not insulated and are designated 'U' in the diagrams. Transparent insulations are designated 'T'.
One point worth making is that the mauve sleeves and insulations often fade and may appear white.
REAR WIRING LOOM
The rear wiring loom starts below the bonnet hinge where the wires coming from inside the car are separated as to those going to the front loom and those for the rear loom. Bullet connectors are used at the point of separation and are clipped to the upper bulkhead in an insulated clip attached to the bulkhead. From here the rear loom runs under the bonnet hinge to the left of the car and back through the bulkhead (in a rubber grommet). It then goes up the box section on the left of the windscreen, then behind the trim above the left hand doors and down the inner rear wing to the rear lights.
The following points are worth noting:
1) The colours of the sleeves at the start of the loom do not always correspond with the colours at the other end, inside the boot.
2) On RHD cars the courtesy light connection shown in our diagram is not used but if you peel back the trim above the front passenger door you should find it taped up for safety. It is permanently 'live' so keep it insulated if you're not using it. Not all RHD cars had a courtesy light but if one was fitted its connection was taken from the bullet connector on the bulkhead for the LHD light and then run up the right hand side of the windscreen in a sleeve.
3) The wire to the fuel gauge runs down the inner rear wing behind the trim and through a hole in the floor beneath the rear seat to the sender unit on the fuel tank.
LAMP BAR WIRING
The main front wiring loom splits in two at the lamp bar where there are numerous bullet connections, all with colour coded sleeves. From these joints the wiring for the front lights is fed through the lamp bar. Other wires such as the horn, indicators and coil go direct to their respective piece of equipment. The two clusters of bullet connectors should be strapped to the lamp bar inside a piece of rubber to insulate them from the lamp bar. The following points are worth noting:
1) The bullet for the wire to the oil pressure switch (brown sleeve) is smaller than all the others.
2) The wires for the indicators are carried in a separate pale grey sleeve.
3) To remove the wiring which runs through the lamp bar is easy - it's feeding it back through afterwards that is a nightmare!
THE WESSEX DUCKS
THE WESSEX DUCKS