These are the details of the wire colours for changing over to Capri clocks.

Sierra plug
black/yellow    common feed
brown           common feed
blue/green      oil(move to minus side of coil)
red/white   temp (change temp send to white cap)
black/blue  fuel (might need to change sender to escort mk 2 or capri)
black/green  indicator
black/white  indicator
white/black  main beam
grey/green   dash ilumination
light blue   batt/ign
brown/yellow  hand brake
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note colours may vary from model to model year to year.
check by tracking circuit at rear of module to dials/lights and to module plug
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Capri module
it is essential to obtain as much wire as poss with module plug for ease of fitting
also retain oil feed line and connections to block.
black/yellow    common feed
brown            common feed
green           rev counter
red/white       temp
black/blue      fuel
green black     indicator
black/white     indicator
blue/white      main beam
yellow/grey     dash ilumination
light blue      batt/ign
brown green     low brake fluid
red             amp meter
yellow          amp meter
caution when wiring amp meter

please read note* above and do the same for capri