Black | earth (ground) connections |
Green | feeds to auxiliary devices controlled by the ignition switch, eg wipers, flashers, etc |
White | base color for ignition circuits |
Red | sidelights (parking lights) and rear lights |
Blue | with white trace main beam headlamp with red trace - dip (meeting) beam headlamp |
Purple | auxiliary devices not fed via the ignitior switch, eg horn, interior light |
Brown | main battery feed |
Other colors are used, according to equipment
specifications, eg light green, pink, slate. Handbooks are usually printed
in black and white only, so the cable colors are identified by a
lettering code, such as:
B | Black | P | Purple |
U | Blue | G | Green |
N | Brown | S | Slate |
R | Red | W | White |
When a cable has a base color and a second color
spiral trace the code is two letters, for example: WG = White with green
trace
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Destination |
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All earth connections | |
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Tachometer generator to tachometer |
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Tachometer generator to tachometer |
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Screenwiper switch to screenwiper (single speed) relay to radiator fan motor |
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Vacuum brake switch to warning light and/or buzzer |
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Radiator fan motor to thermal switch |
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Electric speedometer |
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Brake fluid level warning light to switch and handbrake switch |
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Electric speedometer |
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Lighting switch (head) to dipper switch | |
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Screenwiper motor to switch |
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Headlamp dip beam fuse to left hand headlamp (when independently fused) |
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Dipper switch to headlamp dip beam. Headlamp dip beam fuse to right-hand headlamp (when independently fused) |
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Headlamp main beam fuse to left hand headlamp or inboard headlamps (when independently fused) |
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Dipper switch to main beam (subsidiary circuit – headlamp flasher relay to headlamp). Headlamp main beam fuse to right-hand headlamp (when independently fused). Headlamp main beam fuse to outboard headlamps (when outboard headlamps independently fused). Dipper switch to main beam warning light |
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Long range driving switch to lamp. |
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Main battery feed | |
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Alternator warning light, negative side |
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Control box (compensated voltage control only) to ignition and ignition switch, eg wipers, flashers, etc lighting switch (feed) |
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Dynamo ‘F’ to control box ‘F’ Alternator field ‘F’ to control box ‘F’ |
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Screenwiper motor to switch |
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Alternator regulator feed |
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Compression ignition starting aid to switch. Main battery feed to double pole ignition switch (a.c. alt. system) |
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Ammeter to control box. Ammeter to main alternator terminal |
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Dynamo ‘D’ to control box ‘D’and ignition warning light. Alternator neutral point |
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Accessories fused via ignition switch (subsidiary circuit fuse A4 to hazard switch (terminal 6)) | |
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Fuel gauge to fuel tank unit or changeover switch |
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Water temperature gauge to temperature unit |
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Reverse lamp to switch |
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Hazard flasher unit to hazard pilot lamp |
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Low fuel level warning light |
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Choke solenoid to choke switch (when fused) |
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Stop lamps to stop lamp switch |
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Left-hand flasher lamps |
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Heater motor to switch (or to fast)(on 2-speed motor) |
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Right-hand flasher lamps |
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Heater motor to switch, single speed (or to ‘slow’ on two-speed motor) |
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Instrument voltage stabilizer to instruments | |
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Screen jet switch to screen jet motor |
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Flasher switch to left-hand flasher warning light |
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Flasher switch to flasher unit ‘L’ |
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Flasher unit ‘L’ to emergency switch (simultaneous flashing) |
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Flasher unit ‘F’ to flasher warning light |
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Fuel tank changeover switch to right-hand tank unit |
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Fuel tank changeover switch to left-hand tank unit |
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Flasher switch to right-hand flasher warning light |
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Accessories fused direct from battery | |
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Horn or horn relay to horn push |
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Horn fuse to horn relay (when horn is fused separately) |
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Aerial lift motor switch DOWN |
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Boot light switch to boot light |
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Aerial lift motor to switch UP |
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Interior light to switch (subsidiary circuit—door safety lights to switch ) |
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Horn to horn relay |
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Side and tail lamp feed | |
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Parking switch to left-hand side lamp |
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Variable intensity panel lights (when used in addition to normal panel lights) |
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Lighting switch to side and tail lamp fuse (when fused) |
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Screenwiper motor to switch |
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Parking light switch to right-hand sidelamp |
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Map light switch to map light |
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Panel light switch to panel lights |
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Fog lamp switch to fog lamp |
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Window lift | |
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Window lift |
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Window lift |
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Window lift |
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Window lift |
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Window lift |
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Window lift |
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Window lift |
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Window lift |
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Window lift |
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Window lift |
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Window lift |
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Ignition control circuit (unfused) (ignition switch to ballast resistor) | |
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Ignition coil CB to distributor contact breaker. Rear heated window to switch or fuse TAC ignition |
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Choke switch to choke solenoid (unfused). Rear heater fuse unit to switch. Electronic ignition TAC ignition unit to resistance. |
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Oil pressure switch to warning light or gauge |
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Fuel pump No. 2 or left-hand to change-over switch |
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Screenwiper motor to switch |
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Hazard warning feed (to switch) |
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Radio from ignition switch |
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Fuel pump No. 1 or right-hand to change-over switch |
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Solenoid starter switch to starter push or inhibitor switch |
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Tachometer to ignition coil |
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Starter inhibitor switch to starter push. Ballast resislor to coil. Starter solenoid to coil |
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Overdrive | |
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Overdrive |
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Overdrive |
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Overdrive |
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Screenwiper motor to switch |
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Overdrive |
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Overdrive |
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