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~ SERVICE DIVISION

Frontliners AudiovisualService Technical Information

1978-79 M.G. MIDGETELECTRICAL CIRCUIT DIAGNOSIS

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The purpose of this program and workbook is to take you through a step bystep troubleshooting procedure for every electrical circuit in the car. This willbe done by relating the components and circuits shown on the wiringdiagram to the actual components and circuits in the car. Also included is thelocation of the components and circuits. Each circuit is color coded in thefilmstrip for easy identification. To find a particular circuit, load the projectorand advance the film in fast forward until you reach the desired section asindicated by the color of the circuit.

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The purpose of this program and workbook is to take you through a step by

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CASSETTE AMAIN WIRING DIAGRAMIGNITION FEED CIRCUITHEAD LIGHT CIRCUITS

HeadlightsHigh Beam FlasherHigh Beam Warning Light

RUNNING LIGHT CIRCUITSLeft Parking, Tail and Marker LightsRight Parking, Tail and Marker LightsPanel Lights

TURN SIGNAUHAZARD WARNING LIGHTSTurn SignalsHazard Warning

CASSETTE BBRAKE, BRAKE WARNING AND REVERSE

LIGHTSBrake LightsBrake Warning LightIgnition to startHand Bra-keBrake FailureReverse Lights

TRUNK/INTERIOR LIGHT CIRCUITSTrunk LightInterior Light

TIME DELAY CIRCUITSDirect to BatteryMomentary Ignition FeedSeat Belt WarningGroundSeat Belt BuckleIgnition Key Audible Warning

INSTRUMENTATION CIRCUITSHORN, HEATER/DEFROSTER, WINDSHIELD

WIPER/WASHER CIRCUITSHornHeater/defrosterWiper/washer

CASSETTE AMAIN WIRING DIAGRAMIGNITION FEED CIRCUITHEAD LIGHT CIRCUITS

HeadlightsHigh Beam FlasherHiah Beam Warnina l.lqht

123456789

10111213

14151617181920212223242526

2728293031

123456

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Canada and USA except California SpecificationSeveral of the components"listed in this key may not be included in the specification of all models.

1 R.H. front side-marker lamp2 Reverse lamp switch3 Stop lamp switch4 R.H. front flasher lamp5 Horn-push6 Horn7 Oil pressure switch8 Diode for brake warning9 R.H . rear side-marker lamp

10 R.H. rear flasher lamp11 R.H. tail lamp12 Stop ,lamp13 R.H. parking lamp14 Headlamp main beam15 Headlamp dip beam16 Olrectton indicator switch17 Headlamp dip switch18 Headlamp flasher switch19 Windshield washer pump20 Coolant temperature transmitter21 Flasher unit22 Brake pressure failure switch23 Time delay buzzer24 Fuel gauge tank unit25 Reverse lamp26 Combined windshield washer and

wiper switch

27 Instrument voltage stabilizer28 Hazard warning switch29 Hand brake switch '30 Interior courtesy lamp door switch31 Number-plate ill umination lamp32 Windshield wiper motor33 Fuse unit34 Direction indicator warning lamp35 Hand brake warning lamp36 Ignition starter switch37 Switch illumination lamp38 Driver's seat belt buckle switch39 Interior courtesy lamp40 Distributor41 Alternator42 Resistor - distributor43 Oil pressure (warn ing light44 Ignition warning lamp45 'FASTEN BELTS' warning lamp46 Luggage compartment lamp47 Ignition coil48 Panel lamp49 Fuel gauge50 Lighting switch51 Luggage compartment lamp

switch52 L.H. parking lamp

CABLE COLOR CODE

53 L.H. front flasher lamp54 Starter solenoid55 Headlarnp main beam warning

lamp56 Coolant temperature gauge57 Hazard warning flasher unit58 Ignition key audible warning door

switch59 Cigar lighter60 Cigar lighter illumination lamp61 L.H. front side-marker lamp62 Battery63 Starter motor64 Heater motor65 Heater motor switch66 Tachometer67 Heater control illumination lamp68 Panel lamp switch69 Line fuse for hazard warning70 Line fuse for radio*71 Radio*72 L.H . rear flasher lamp73 L.H . tail lamp74 L.H . rear side-marker lamp

"Optional f itment circuits shown dotted

R.B.

RedBlack

N.U.

BrownBlue

P.G..

PurpleGreen

W.Y.

White. Yellow

K.O .

PinkOrange

LG.S.

Light GreenSlate

When a cable has two color code letters the first denotes the main color and the second denotes the tracer color.

1 R.H. front side-marker lamp 27 Instrument voltage stabilizer 53 L.H. front flasher lamp2 Reverse lamp switch 28 Hazard warning switch 54 Starter solenoid3 Stop lamp switch 29 Hand brake switch 55 Headlamp main beam warning4 R.H. front flasher lamp 30 Interior courtesy lamp door switch lamp5 Horn-push 31 Number-plate ill umination lamp 56 Coolant temperature gauge6 Horn 32 Windshield wiper motor 57 Hazard warning flasher unit

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Prepared byEducational Communications, Inc. ·761 Fifth AvenueKing of Prussia, Pa. 19406