1971 model year, North America

Earth wiring

Colour Fuse Components
black none earth
black/white 1 purple brake pressure test switch
brake pressure failure switch
black/white 2 purple brake pressure failure switch
brake pressure failure lamp
blue none main lighting switch
side markers
blue/light-green green wiper switch
wiper motor 'fast' speed
blue/red none dipswitch
headlamp dipped beams
blue/white none or
purple (flasher)
headlamp flasher switch
'main beam' warning light
headlamp main beams
brown 1 none solenoid
alternator (2)
hazards in-line fuse
ignition relay
main lighting switch
ignition switch
starter relay
brown 2 hazards in-line hazards in-line fuse
hazard flasher
brown/light-green green wiper manual switch
wiper motor park switch
brown/yellow none alternator
ignition warning light
green 1 green fusebox
brake light switch
heater fan
wiper motor
voltage stabiliser
reverse light switch
hazard flasher switch
screen washer motor
HRW switch
oil pressure gauge
tachometer (12v)
green 2 green hazard switch
indicator flasher
green/black green fuel gauge
fuel tank sender
green/blue green temp transmitter
temp gauge
green/brown green reverse lights switch
reverse lights
green/pink accessories in-line accessories in-line fuse
screen washer motor
wiper motor
heater fan switch
wiper switch
green/purple green brake light switch
brake lights
green/red green or
hazards in-line
indicator-signal switch
hazard switch
left-side flashers
left-side flasher repeater
green/white green or
hazards in-line
indicator-signal switch
hazard switch
right-side flashers
right-side flasher repeater
green/yellow green heater fan switch
heater fan
light-green/black green screen washer switch
screen washer pump
light-green/brown 1 green indicator flasher
indicator switch
light-green/brown 2 hazards in-line hazards flasher
hazards switch
light-green/green green voltage stabiliser
fuel gauge
temp gauge
light-green/purple hazards in-line hazards switch
hazards warning light
purple purple fusebox
courtesy light
cigar lighter connector
brake pressure fail lamp
headlamp flasher
boot/loadspace light
ignition key warning door switch
purple/black purple horn switch
purple/green purple ignition key buzzer
ignition key buzzer door switch
purple/pink purple ignition switch
ignition key buzzer
purple/white 1 purple door switches
courtesy light
purple/white 2 purple boot/loadspace switch
boot/loadspace light
red red fusebox
rear/parking lights (one fuse per side)
red/brown HRW in-line HRW switch
HRW warning lamp
red/green none main lighting switch
panel lights dimmer
red/light-green green wiper switch
wiper motor 'normal' speed
red/white none panel lights dimmer
panel lights
white 1 none ignition switch
ignition warning light
tachometer (signal 1)
fuel pump
overdrive manual switch
white 2 none tachometer (signal 2)
coil +ve
white/black 1 none coil -ve
white/black 2 HRW in-line HRW switch
white/brown 1 green oil pressure transmitter
oil pressure gauge
white/brown 2 none starter relay
starter solenoid
white/green 1 purple purple connector
cigar lighter
white/green 2 none ignition switch
accessories in-line fuse
white/red 1 none ignition switch
starter relay (via park/neutral switch automatics only)
yellow none overdrive manual switch
overdrive gearbox switch (part-way)
yellow/purple none overdrive gearbox switch
overdrive solenoid
yellow/red none overdrive manual switch
overdrive gearbox switch (part-way)

Earth wiring:

All earths wired to a body bolt or via bullet connectors are circled in red, plus the engine earth not shown. There is also a sealed junction circled in blue, this rarely gives problems. The remainder are picked up from the physical mounting of the component: