Cortina Rev Counter Dash Wiring

 

 

Standard wiring

 For the dash with the central clock is as follows:

 Plug numbers are taken from the Haynes manual and may not bear a resemblance to the physical order of your plugs.

 

The Large plug

Plug number 1 2 3 4 5 6 7 8 9
Colour Brown Black Blue Black Blue Blue Black Red Grey
Function Earth LH Indicator Oil Light Ignition Live Fuse 7 Ignition Light Main Beam Light RH Indicator Permanent Live Instrument Illumination

 

The Small Plug 

Plug Number 1 2 3 4 5
Colour Blue/Black Double Brown Double Grey/Yellow Black/Yellow Red/White
Function Fuel gauge Earth Instrument Illumination Ignition Live Fuse 7 Temperature Gauge

 

 

Wiring For The Rev Counter Dash

 

The Large plug

 

Using plug numbers as shown in picture 1

(These plug numbers do correspond to Haynes)

Plug number 1 2 3 4 5 6 7 8 9
Colour Black/White Blue/Black Brown Blue/Green Black/Yellow Blue Blue/White Red/White Black/Green
Function LH Indicator Fuel Gauge Earth Oil Light Ignition Live Fuse 7 Ignition Light Main Beam Light Temperature Gauge RH Indicator

 

The Small Plug

 

 

Using plug numbers as shown in picture 2

(These plug numbers do correspond to Haynes) 

Plug Number 1 2 3 4 5
Colour Empty Double Brown Green Black/Yellow Double Grey/Yellow
Function None Earth Rev Counter To Coil Negative Side Ignition Live Fuse 7 Instrument Illumination

 (Plug number 5 is shown as a single Grey/Red in Haynes)

The green wire to the coil negative side will have to be added.  There will be two wires left over a Grey/Yellow instrument illumination wire and a Red permanent live, these can both be extended to feed a clock in the hang down console.  A connector can be cut off one of these wires to make the additional wire for the rev counter.  If they are not going to be used insulate the ends and tie them up out of the way.

The functions of the wires were taken from the Haynes diagram, for confirmation they can be traced on the printed circuit of the instrument cluster as below in picture 3.

 

Written by John McGregor
John_thm55@hotmail.com