martyn wright Posted August 8 Report Share Posted August 8 Restoration nearly complete! I have One wire which comes out of the main loom under the dash by the main control box and its Green and Purple? Can't see it on the Manual or in the Handbook??Help! Link to comment Share on other sites More sharing options...
johny Posted August 8 Report Share Posted August 8 I got that as going from the brake switch item 19 to the brake lamps items 20 in the manual diagram👍 Link to comment Share on other sites More sharing options...
martyn wright Posted August 8 Author Report Share Posted August 8 Thanks! Weird! I will have a look in the morning and give you a update? Cheers! Link to comment Share on other sites More sharing options...
martyn wright Posted August 8 Author Report Share Posted August 8 (edited) Johny! The Auto Elec has bypassed the loom with a Green/Purple single wire to the Flasher U it?? But on the wire he has sealed the end with Black tape! So I couldn't see the G/P underneath?? So I will seal the wire which comes out of the main loom or take out the bypassed single wire tomorrow! What I couldn't understand was my brake lights were/are working fine! Edited August 8 by martyn wright Link to comment Share on other sites More sharing options...
johny Posted August 8 Report Share Posted August 8 oooop two threads going here😁 Link to comment Share on other sites More sharing options...
JohnD Posted August 8 Report Share Posted August 8 MG have their uses: https://www.mgexp.com/article/lucas-wiring-colour-guide.50 Maybe I should nick it for Triumph: MAIN TRACER PURPOSE Black All earth connections Black Brown Tachometer generator to tachometer Black Blue Tachometer generator to tachometer Black Red Electric or electronic speedometer to sensor Black Purple Tempreature switch to warning light Black Green Relay to radiator fan motor Black Light Green Vacuum brake switch or brake differential pressure valve to warning light and/or buzzer Black White Brake fluid level warning light to switch and handbrake swith, or radio to speakers Black Yellow Electric speedometer Black Orange Radiator fan motor to thermal switch MAIN TRACER PURPOSE Blue Lighting switch (head) to dip switch Blue Brown Headlamp relay to headlamp fuse Blue Red Dip switch to headlamp dip beam fuse Fuse to right-hand dip headlamp Blue Light Green Headlamp wiper motor to headlamp wash pump motor Blue White a) Dip switch to headlamp main beam fuse b) Headlamp flasher to main beam fuse c) Dip switch main beam warning light d) Dip switch to long-range driving light switch Blue Yellow Long-range driving light switch to lamp Blue Black Fuse to right-hand main headlamp Blue Pink Fuse to left-hand dip headlamp Blue Slate Headlamp main beam fuse to left-hand headlamp or inboard headlamps when independently fused Blue Orange Fushe to right-hand dip headlamp MAIN TRACER PURPOSE Brown Main battery lead Brown Blue Control box (compensated voltage control only) to ignition switch and lighting switch (feed) Brown Red Compression ignition starting aid to switch Main battery feed to double pole ignition switch Brown Purple Alternator regulator feed Brown Green Dynamo 'F' to control box 'F' Alternator field 'F' to control box 'F' Brown White Ammeter to control box Ammeter to main alternator terminal Brown Yellow Alternator to 'no charge' warning light Brown Black Alternator battery sensing lead Brown Slate Starter relay contact to starter solenoid Brown Orange Fuel shut-off (diesel stop) MAIN TRACER PURPOSE Green Accessories fuesed via ignition switch Green Brown Switch to reverse lamp Green Blue Water temperature gauge to temperature unit Green Red Direction indicator switch to left-hand flasher lamps Green Purple Stop lamp switch to stop lamps, or stop lamp switch to lamp failure unit Green Light Green Hazard flasher unit to hazard pilot lamp or lamp failure unit to stop lamp bulbs Green White Direction indicator switch to right hand flasher lamps Green Yellow Heater motor to switch single speed (or to 'slow' on tow- or three-speed motor) Green Black Fuel gauge to fuel tank unit or changeover switch or voltage stabilizer to tank units Green Pink Fuse to flasher unit Green Slate a) Heater motor to switch ('fast' on two- or three-speed motor) b) Coolant level unit to warning light Green Orange Low fuel level switch to warning light MAIN TRACER PURPOSE Light Green Instrument voltage stabilizer to instruments Light Green Brown Flasher switch to flasher unit Light Green Blue a) Flasher switch to left-hand flasher warning light b) Coolant level sensor to control unit c) Test switch to coolan level control unit Light Green Red Fuel tank changeover switch to right-hand tank unit or entry and exit door closed switch to door actuator Light Green Purple Flasher unit to flasher warning light Light Green Green Start inhibitor relay to change speed switch; or switch to heater blower motor second speed on three-speed unit Light Green White Low air pressure switch to buzzer and warning light Light Green Yellow Flasher switch to right-hand warning light; or differential lock switch to differential lock warning light Light Green Black Front screen jet switch to screen jet motor Light Green Slate Fuel tank changeover switch to left-hand tank unit; or entry and exit door open switch to door actuator Light Green Orange Rear window wash switch to wash pump; or cab lock-down switch to warning light MAIN TRACER PURPOSE Orange Wiper circuits fused via ignition switch Orange Blue Switch to front screen wiper motor first speed timer or intermittend unit Orange Green Switch to front screen wiper motor second speed Orange Black Switch to front screen wiper motor parking cicuit, timer or intermittent unit Orange Purple Timer or intermittent unit to motor parking circuit Orange White Timer or intermittent unit to motor parking circuit Orange Yellow Switch to headlamp or rear window wiper motor feed, timer or relay coil Orange Light Green Switch to headlamp or rear window wiper motor parking circuit timer or relay coil Orange Pink Timer or relay to headlamp or rear window wiper motor feed Orange Slate Timer or relay to headlamp or rear window wiper motor parking circuit MAIN TRACER PURPOSE Pink White Ballast terminal to ignition distributor MAIN TRACER PURPOSE Purple Accessories fed direct from battery via fuse Purple Brown Horn fuse to horn relay when horn is fused separately Purple Blue Fuse to heated rear window relay or switch and warning light Purple Red Switches to map light, under bonnet light, glove box light and boot lamp when fed direct from battery fuse Purple Green Fuse to hazard flasher Purple Light Green Fuse to relay for screen demist Purple White Interior lights to switch (subsidiary circuit door safety lights to switch) Purple Yellow Horn to horn relay Purple Black Horn to horn relay to horn push Purple Pink Rear heated window to switch or relay Purple Slate Aerial lift motor to switch up Purple Orange Aerial lift motor to switch down MAIN TRACER PURPOSE Red Main feed to all circuits mastered by sidelamp switch Red Brown Rear fog guard switch to lamps Red Blue Front fog lamp fuse to fog lamp switch Red Purple Switches to map light, under bonnet light, glove box light and boot lamp when sidelamp circuit fed Red Green Bulb failure unit to right-hand-side and rear lamps Red White a) Sidelamp fuse to right-hand side and rear lamps b) Sidelamp fuse to panel light rheostat c) Fuse to panel light switch or rheostat d) Fuse to fibre optic source Red Yellow Fog lamp switch to fog lamp or front fog fuse to fog lamps Red Black Left-hand,sidelamp fuse to side and tail lamps and number plate illumination Red Pink Sidelamp fuse to lighting relay Red Slate Lamp failure unit to lef-hand side and tail lamps Red Orange Fusebox to rear fog guard switch MAIN TRACER PURPOSE Slate Window lift main lead MAIN TRACER PURPOSE White Ignition switch or starter solenoid to ballast resistor White Brown Oil pressure switch to warning light or gauge, or starter relay to oil pressure switch White Blue Choke switch to choke solenoid (unfused) and/or choke to switch to warning light, or electronic ignition distributor to drive resistor White Red Starter switch to starter solenoid or inhibitor switch or starter relay or ignition (start position) to bulb failure unit White Purple Fuel pump no 1 or right-hand to changeover switch White Green Fuel pump no 2 or left-hand to changeover switch White Light Green Start switch to starter interlock or oil pressure switch to fuel pump or start inhibitor switch to starter relay or solenoid White Yellow Ballast resistor to coil or starter solenoid to coil White Black Ignition coil contact breaker to distributor contact breaker, or distributor side of coil to voltage impulse tachometer White Pink Ignition switch to radio fuse White Slate Current tachometer to ignition coil White Orange Hazard warning lead to switch MAIN TRACER PURPOSE Yellow a) Overdrive b) Petrol injection c) Door locks d) Gear selector switch to start John 1 Link to comment Share on other sites More sharing options...
DVD3500 Posted August 9 Report Share Posted August 9 As I am recovering from a few weeks' vacation I presume "tracer" means the thin line of color e.g. the "Main White Tracer Orange" would mean the wire itself is white with an orange stripe down it...? Link to comment Share on other sites More sharing options...
JohnD Posted August 9 Report Share Posted August 9 Yes, the first colour is the main, the second the trace. 1 Link to comment Share on other sites More sharing options...
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