BRITISH STANDARD AUTOMOBILE SERIES BS AU 7a 1983 Specification for Colour code for road vehicle electrical cables UDC 629 113 066 621 315 2 777 6 BS AU 7a 1983 This British Standard, having been prepa[.]
BRITISH STANDARD AUTOMOBILE SERIES Specification for Colour code for road vehicle electrical cables UD C 62 1 066: 621 31 - 777 BS AU 7a:1983 BS AU 7a:1983 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Committee (AUE- ) to Technical Committee AUE/1 upon which the following bodies were represented: Association of Trailer Manufacturers Department of Transport Electric Cable Makers’ Confederation National Caravan Council Limited Society of Motor Manufacturers and Traders Limited This British Standard, having been prepared under the direction of the Automobile Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 December 983 First published February 963 First revision June 968 Second revision December 983 © BSI 02- 2000 The following BSI references relate to the work on this standard: Committee reference AUE/1 Draft for comment 81 /71 785 DC ISBN 580 13554 Amendments issued since publication Amd No Date of issue Comments BS AU 7a:1983 Contents Page Committees responsib le © BSI 02 - 000 Inside front cover Foreword ii Scope C ab le colours Figure — Basic circuits Figure — Supplementary circuits Tab le — Cable colour code i BS AU a: 983 Fore word This British Standard has been prepared under the direction of the Automobile Standards Committee It supersedes BS AU 7: 968 which is withdrawn This revision brings the standard up to date with subsequent developments in vehicle electrical equipment For the information of the user the destinations of the cables in the previous 968 edition of this standard have been included New cables, reference numbers 21 to 33, have been added to this standard A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application C omp liance with a British S tand ard d oe s no t of itse lf confe r immunity from le gal ob ligatio ns S ummary of p age s This document comprises a front cover, an inside front cover, pages i and ii, pages to and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii © BSI 02- 2000 BS AU 7a:1 983 Scope Cable colours This British Standard specifies requirements for a Cable colours for related cable functions shall be as colour code for electrical cables used in road vehicles specified in Table and in Figure , for basic that identifies each circuit by the colour of the cables circuits; and Table and Figure 2, for used supplementary circuits NOTE Due to the variation in design of some components, such as windscreen wiper motors, it is not possible to include all switches and internal wiring arrangements The component manufacturers should be consulted for further details Where two colours are specified, the first colour shall be the primary colour and the second colour shall be the tracer Table — Cable colour code Cable Cable colour Cable destination Cable destination in 968 version of ref no BS AU (for information) Brown Main battery feed Brown with blue Control box (compensated voltage Control box (compensated voltage control only) to ignition and control only) to ignition and lighting switch (feed) lighting switch (feed) Brown with red Main battery feed Compression ignition starting aid Compression ignition starting aid to switch Main battery feed to to switch Main battery feed to double pole ignition switch double pole ignition switch (a c alt, system) Brown with purple Alternator regulator feed Alternator regulator feed Brown with green Dynamo “F” to control box “F” Dynamo “F” to control box “F” Brown with light Alternator field “F” to control box Alternator field “F” to control box “F” “F” Spare Screenwiper motor to switch (now green transferred to cable ref nos 22, 23 and 24) Brown with white Brown with yellow Ammeter to control box Ammeter Ammeter to control box to main alternator terminal Ammeter to main alternator Alternator to “no change” warning Dynamo “D” to control box “D” and light ignition warning light Alternator neutral point Brown with black Alternator battery sensing lead Alternator warning light, negative side 10 Brown with pink Spare Spare 11 Brown with slate Starter relay contact to starter Spare solenoid 12 Brown with orange Fuel shut- off (diesel stop) Spare 13 Blue Lighting switch (head) to dipper Lighting switch (head) to dipper switch switch 14 Blue with brown Headlamp relay to headlamp fuse Spare 15 Blue with red Dipper switch to headlamp dip Dipper switch to headlamp dip beam fuse Fuse to right- hand dip beam Headlamp dip beam fuse to headlamp right- hand headlamp (when independently fused) 16 Blue with purple Spare Spare 17 Blue with green Spare Spare 18 Blue with light Headlamp wiper motor to Screenwiper motor to switch green headlamp wash pump motor © BSI 02- 2000 BS AU 7a:1 983 Table — Cable colour code Cable Cable colour Cable destination Cable destination in 968 version of ref no 19 BS AU (for information) Blue with white a) Dipper switch to headlamp main Dipper switch to headlamp main beam fuse beam (subsidiary circuit: headlamp b) Headlamp flasher to main beam flasher relay to headlamp) fuse Headlamp main beam fuse to c) Dipper switch main beam right- hand headlamp warning light (when independently fused) d) Dipper switch to long- range Headlamp main beam fuse to driving light switch outboard headlamps (when outboard headlamps independently fused) Dipper switch to main beam warning light 20 Blue with yellow Long- range driving light switch to Long- range driving switch to lamp lamp 21 Blue with black Fuse to right- hand main headlamp Spare 22 Blue with pink Fuse to left- hand dip headlamp Headlamp dip beam fuse to left- hand headlamp when independently fused 23 Blue with slate Headlamp main beam fuse to Headlamp main beam fuse to left- hand headlamp or inboard left- hand headlamp or inboard headlamps when independently headlamps when independently fused fused 24 Blue with orange Fuse to right- hand dip headlamp Spare 25 Red Main feed to all circuits mastered Side and tail lamp feed by sidelamp switch 26 Red with brown Rear fog guard switch to lamps Variable intensity panel lights (when used in addition to normal panel lights) 27 Red with blue Front fog lamp fuse to fog lamp Spare switch 28 Red with purple Switches to map light, under Map light switch to map light bonnet light, glove box light and boot lamp when side lamp circuit fed 29 30 Red with green Red with light Bulb failure unit to right- hand side Lighting switch to side and tail and rear lamps lamp fuse (when fused) Spare Screenwiper motor to switch a) Sidelamp fuse to right- hand side Panel light switch to panel lights green 31 Red with white and rear lamps b) Sidelamp fuse to panel light rheostat, panel light or map light c) Fuse to panel light switch or rheostat d) Fuse to fibre optic source 32 Red with yellow Fog lamp switch to fog lamp or Fog lamp switch to fog lamp front fog fuse to fog lamps 33 Red with black Side lamp fuse to side and tail Parking light switch to left- hand lamps, left- hand and number plate sidelamp illumination © BSI 02- 2000 BS AU 7a:1 983 Table — Cable colour code Cable Cable colour Cable destination Cable destination in 968 version of ref no BS AU (for information) 34 Red with pink Sidelamp fuse to lighting relay Spare 35 Red with slate Lamp failure unit to left- hand side Spare and tail lamps 36 Red with orange Fusebox to rear fog guard switch Parking light switch to right- hand sidelamp 37 38 39 Purple Purple with brown Purple with blue Accessories fed direct from battery Accessories fused direct from via fuse battery Horn fuse to horn relay when horn Horn fuse to horn relay (when horn is fused separately is fused separately) Fuse to heated rear window relay Spare or switch and warning light 40 Purple with red Switches to map light, under Boot light switch to boot light bonnet light, glove box light and boot lamp when fed direct from battery fuse 41 42 Purple with green Fuse to hazard flasher Spare Purple with light Fuse to relay for screen demist Spare green 43 Purple with white Interior lights to switch (subsidiary Interior light to switch (subsidiary circuit: door safety lights to switch) circuit: door safety lights to switch) 44 Purple with yellow Horn to horn relay Horn to horn relay 45 Purple with black Horn to horn relay to horn push Horn to horn relay to horn push 46 Purple with pink Rear heated window to switch or Spare relay 47 Purple with slate Aerial lift motor to switch up Aerial lift motor to switch up 48 Purple with orange Aerial lift motor to switch down Aerial lift motor to switch down 49 Green Accessories fused via ignition Accessories fused via ignition switch switch (subsidiary circuit fuse A4 to hazard switch terminal 6) 50 Green with brown Switch to reverse lamp Reverse lamp to switch 51 Green with blue Water temperature gauge to Water temperature gauge to temperature unit temperature unit Direction indicator switch to Left- hand flasher lamps 52 Green with red left- hand flasher lamps 53 Green with purple Stop lamp switch to stop lamps; Stop lamps to stop lamp switch or stop lamp switch to lamp failure unit 54 Green with light Hazard flasher unit to hazard pilot Hazard flasher unit to hazard pilot green lamp; lamp or lamp failure unit to stop lamp bulbs 55 Green with white Direction indicator switch to Right- hand flasher lamps right- hand flasher lamps 56 Green with yellow © BSI 02- 2000 Heater motor to switch single Heater motor to switch, single speed (or to “slow” on two or speed (or to “slow” on two- speed three- speed motor) motor) BS AU 7a:1 983 Table — Cable colour code Cable Cable colour Cable destination Cable destination in 968 version of ref no 57 BS AU (for information) Green with black Fuel gauge to fuel tank unit or Fuel gauge to fuel tank unit or changeover switch or voltage changeover switch stabilizer to tank units 58 Green with pink Fuse to flasher unit Choke solenoid to choke switch (when fused) 59 Green with slate a) Heater motor to switch (“fast” on Heater motor to switch (fast on two or three- speed motor) two- speed motor) b) Coolant level unit to warning light 60 Green with orange Low fuel level switch to warning Low fuel level warning light light 61 62 Light green Light green with Instrument voltage stabilizer to Instrument voltage stabilizer to instruments instruments Flasher switch to flasher unit Flasher switch to flasher unit brown 63 Light green with a) Flasher switch to left- hand Flasher switch to left- hand flasher blue flasher warning light warning light b) Coolant level sensor to control unit c) Test switch to coolant level control unit 64 Light green with Fuel tank changeover switch to Fuel tank changeover switch to red right- hand tank unit; right- hand tank unit or entry and exit door closed switch to door actuator 65 66 Light green with Flasher unit to flasher warning Flasher unit to flasher warning purple light light Light green with Start inhibitor relay to change Spare green speed switch; or switch to heater blower motor second speed on three- speed unit 67 68 Light green with Low air pressure switch to buzzer white and warning light Spare Light green with Flasher switch to right- hand Flasher switch to right- hand yellow warning light; flasher warning light or differential lock switch, to differential lock warning light 69 70 71 Light green with Front screen j et switch to screen j et Screen j et switch to screen j et black motor motor Light green with Hazard flasher unit to hazard Flasher unit to emergency switch pink switch (simultaneous flashing) Light green with Fuel tank changeover switch to Fuel tank changeover switch to slate left- hand tank unit; left- hand tank unit or entry and exit door open switch to door actuator © BSI 02- 2000 BS AU 7a:1 983 Table — Cable colour code Cable Cable colour Cable destination Cable destination in 968 version of ref no 72 BS AU (for information) Light green with Rear window wash switch to wash orange pump; Spare or cab lock- down switch to warning light 73 74 White White with brown Ignition switch or starter solenoid Ignition controlled circuit (unfused) to ballast resistor (ignition switch to ballast resistor) Oil pressure switch to warning Oil pressure switch to warning light or gauge; light or gauge or starter relay to oil pressure switch 75 White with blue Choke switch to choke solenoid Choke switch to choke solenoid (unfused) and/or choke to switch to (unfused) Rear heater fuse unit to warning light; or electronic ignition switch Electronic ignition distributor to drive resistor transistor assisted contact ignition unit to resistance 76 White with red Starter switch to starter solenoid or Solenoid starter switch to starter inhibitor switch or starter relay; push or inhibitor switch or ignition (start position) to bulb failure unit 77 78 79 White with purple White with green Fuel pump no or right- hand to Fuel pump no or right- hand to changeover switch changeover switch Fuel pump no or left- hand to Fuel pump no or left- hand to changeover switch changeover switch White with light Start switch to starter interlock; Screenwiper motor to switch green or oil pressure switch to fuel pump; or start inhibitor switch to starter relay or solenoid 80 White with yellow Ballast resistor to coil; or starter Starter push inhibitor switch to solenoid to coil starter push Ballast resistor to coil Starter solenoid to coil 81 White with black Ignition coil contact breaker to Ignition coil contact breaker to distributor contact breaker; distributor contact breaker Rear or heated window to switch or fuse distributor side of coil to voltage transistor assisted contact ignition impulse tachometer 82 White with pink Ignition switch to radio fuse Radio from ignition switch 83 White with slate Current tachometer to ignition coil Tachometer to ignition coil 84 White with orange Hazard warning feed to switch Hazard warning feed (to switch) 85 Yellow a) Overdrive Overdrive b) Petrol inj ection no c) Door locks d) Gear selector switch to start 86 Yellow with brown a) Petrol inj ection no Overdrive b) Door locks © BSI 02- 2000 BS AU 7a:1 983 Table — Cable colour code Cable Cable colour Cable destination Cable destination in 968 version of ref no 87 BS AU (for information) Yellow with blue a) Overdrive Overdrive b) Petrol inj ection no c) Door locks 88 Yellow with red a) Petrol inj ection no Overdrive b) Door locks 89 Yellow with purple a) Overdrive Overdrive b) Petrol inj ection no c) Door locks 90 Yellow with green a) Overdrive Overdrive b) Petrol inj ection no c) Door locks 91 92 Yellow with light a) Petrol inj ection no green b) Door locks Yellow with white a) Petrol inj ection no Screenwiper motor to switch Spare b) Door locks 93 Yellow with black Door locks Spare 94 Yellow with pink Door locks Spare 95 Yellow with slate Door locks Spare 96 Yellow with orange Door locks Spare 97 Black All earth connections All earth connections 98 Black with brown 99 00 Black with blue Black with red Tachometer generator to Tachometer generator to tachometer tachometer Tachometer generator to Tachometer generator to tachometer tachometer Electric or electronic speedometer Electric speedometer to sensor 01 Black with purple Temperature switch to warning Spare light 02 Black with green Relay to radiator fan motor Screenwiper switch to screenwiper (single speed) Relay to radiator fan motor 03 Black with light Vacuum brake switch or brake Vacuum brake switch to warning green differential pressure valve to light and/or buzzer warning light and/or buzzer 04 Black with white Brake fluid level warning light to Brake fluid level warning light to switch and handbrake switch; switch and handbrake switch or radio to speakers 05 Black with yellow Electric speedometer Electric speedometer 06 Black with pink Spare Spare 07 Black with slate Spare Spare 08 Black with orange Radiator fan motor to thermal Radiator fan motor to thermal switch switch 09 Slate Window lift main feed Window lift 110 Slate with brown Window lift main feed Window lift © BSI 02- 2000 BS AU 7a:1 983 Table — Cable colour code Cable Cable colour Cable destination Cable destination in 968 version of ref no BS AU (for information) 111 Slate with blue Window lift main feed Window lift 112 Slate with red Window lift main feed Window lift 113 Slate with purple Window lift main feed Window lift 114 Slate with green Window lift main feed Window lift Slate with light Window lift main feed Window lift 115 green 116 Slate with white Window lift main feed Window lift 117 Slate with yellow Window lift main feed Window lift 118 Slate with black Window lift main feed Window lift 119 Slate with pink Window lift main feed Window lift 20 Slate with orange Window lift main feed Window lift 21 Orange Wiper circuits fused via ignition — switch 22 Orange with blue Switch to front screen wiper motor — first speed, timer or intermittent unit 23 Orange with green Switch to front screen wiper motor — second speed 24 Orange with black Switch to front screen wiper motor — parking circuit, timer or intermittent unit 25 Orange with purple Timer or intermittent unit to motor — first speed 26 Orange with white Timer or intermittent unit to motor — parking circuit 27 Orange with yellow Switch to headlamp or rear window — wiper motor feed, timer or relay coil 28 Orange with light Switch to headlamp or rear window green wiper motor parking circuit timer — or relay coil 29 Orange with pink Timer or relay to headlamp or rear — window wiper motor feed 30 Orange with slate Timer or relay to headlamp or rear — window wiper motor parking circuit 31 Orange with brown Spare — 32 Orange with red Spare — 33 Pink with white Ballast resistor to distributor — (optionally marked “RESISTIVE”) NOTE Cables ref numbers 21 to 33 are new cables 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