# Master Mechanic Electrical Specialist 1975 Cadillac  Competency Framework

Exhaustive IEEE 1484.20.1 Shareable Competency Definition framework for a master mechanic specializing in the electrical systems of 1974 Cadillac automobiles, including the Eldorado. Derived from the 1974 Cadillac Shop Manual, focusing on Section 6 Electrical, Section 12 Chassis Electrical, Section 15 Accessories (electrical components), and electrical/vacuum circuit diagrams. Covers theory, diagnosis, adjustments, replacement procedures, wiring diagrams, torque specifications where applicable, and special tools. Includes Eldorado-specific FWD electrical considerations.

## Framework Details

| Property | Value |
| --- | --- |
| **Status** | draft |
| **Version** | 1.0 |
| **Competencies** | 50 |

## Competencies

| Statement | Domain | Bloom Level | Context |
| --- | --- | --- |--- |
| Full Electrical System Rebuild & Integration | Advanced Electrical | - | - |
| Electrical System Safety & Warnings Application | Safety & Best Practices | - | - |
| Eldorado FWD Electrical Considerations & Modifications | Model-Specific Electrical | - | - |
| Electrical System Torque Specifications Application | Electrical Mechanical | - | - |
| Power Antenna Motor Diagnosis & Replacement | Accessories Electrical | - | - |
| Horn System Diagnosis & Adjustment | Accessories Electrical | - | - |
| Battery Drain Test & Parasitic Load Diagnosis | Electrical Diagnosis | - | - |
| Electrical System Voltage Drop Testing | Electrical Diagnosis | - | - |
| Seat Belt/Starter Interlock System Diagnosis | Safety Electrical Systems | - | - |
| Power Door Lock Electrical Diagnosis | Accessories Electrical | - | - |
| Power Window Electrical Diagnosis | Accessories Electrical | - | - |
| Power Seat Electrical Diagnosis | Accessories Electrical | - | - |
| Courtesy & Dome Lamp Diagnosis | Lighting System | - | - |
| Clock Diagnosis & Replacement | Instruments & Panel | - | - |
| Ammeter / Alternator Gauge Diagnosis | Instruments & Panel | - | - |
| Oil Pressure Gauge Sending Unit Test | Instruments & Panel | - | - |
| Temperature Gauge Sending Unit Test | Instruments & Panel | - | - |
| Fuel Gauge Sending Unit Test & Replacement | Instruments & Panel | - | - |
| Cornering Lamps Diagnosis | Lighting System | - | - |
| Ignition Switch & Starter Interlock Diagnosis | Starting System | - | - |
| Battery Cable Replacement & Torque | Battery System | - | - |
| Electrical Ground Circuit Diagnosis | Wiring Diagnosis & Repair | - | - |
| Vacuum Circuit Diagrams Interpretation & Testing | Vacuum Systems Electrical | - | - |
| Theft Deterrent System Diagnosis & Arming | Accessories Electrical | - | - |
| Custom Cabriolet Padded Roof Electrical Components | Accessories Electrical | - | - |
| Sun Roof Electrical Diagnosis & Repair | Accessories Electrical | - | - |
| Low Washer Fluid Indicator Diagnosis | Accessories Electrical | - | - |
| Controlled Cycle Windshield Wiper System Diagnosis | Accessories Electrical | - | - |
| Lamp Monitor System Diagnosis | Accessories Electrical | - | - |
| Rear Window De-Fogger Diagnosis & Repair | Accessories Electrical | - | - |
| Twilight Sentinel Automatic Light Control Diagnosis | Accessories Electrical | - | - |
| Guide-Matic Automatic Headlamp Dimmer Diagnosis | Accessories Electrical | - | - |
| Cruise Control System Diagnosis & Adjustment | Accessories Electrical | - | - |
| Radio & Antenna Diagnosis & Replacement | Accessories Electrical | - | - |
| Instrument Panel Removal & Replacement | Instruments & Panel | - | - |
| Speedometer & Odometer Diagnosis | Instruments & Panel | - | - |
| Instrument Panel Gauge Diagnosis & Replacement | Instruments & Panel | - | - |
| Turn Signal & Hazard Lamp Diagnosis | Lighting System | - | - |
| Tail & Brake Lamp System Diagnosis | Lighting System | - | - |
| Headlamp System Diagnosis & Adjustment | Lighting System | - | - |
| Wiring Harness Inspection & Repair | Wiring Diagnosis & Repair | - | - |
| Fuse Block Inspection & Replacement | Chassis Electrical | - | - |
| Battery Testing & Charging | Battery System | - | - |
| Alternator Bench Testing & Overhaul | Charging System | - | - |
| Test and Replace Voltage Regulator | Charging System | - | - |
| Diagnose Charging System Low Output | Charging System Diagnosis | - | - |
| Starter Motor Bench Testing & Overhaul | Starting System | - | - |
| Test and Adjust Starter Solenoid & Relay | Starting System | - | - |
| Diagnose Starting System No-Crank Condition | Starting System Diagnosis | - | - |
| Navigate Electrical Sections & Supplements in Shop Manual | Electrical Fundamentals | - | - |

## Competency Details

### Full Electrical System Rebuild & Integration

Perform complete electrical system rebuild (wiring replacement, component overhaul, diagram verification), integrate with mechanical systems, test all circuits for continuity/load, ensure Eldorado FWD compatibility.

**Keywords:** system rebuild, circuit test, FWD integration

### Electrical System Safety & Warnings Application

Apply manual warnings (disconnect battery before service, avoid shorting tools, wear PPE), ensure no spark near fuel lines, follow ESD precautions for modules.

**Keywords:** electrical safety, battery disconnect, PPE

### Eldorado FWD Electrical Considerations & Modifications

Apply Eldorado-specific electrical modifications (transverse engine wiring routing, final-drive sensor if applicable, FWD accessory belts), ensure no chafing on drive axles, follow supplement diagrams.

**Keywords:** Eldorado FWD, wiring routing, drive axle chafing

### Electrical System Torque Specifications Application

Apply torque specs for electrical components (e.g., alternator mounting ~30 ft�lbs, starter bolts ~35 ft�lbs, battery terminals 10�15 ft�lbs), use calibrated torque wrench, avoid over-tightening terminals.

**Keywords:** torque specs, calibrated wrench, component mounting

### Power Antenna Motor Diagnosis & Replacement

Diagnose power antenna non-extend (motor, relay, wiring), test motor voltage, replace antenna assembly, adjust mast tension.

**Keywords:** power antenna, motor voltage, mast tension

### Horn System Diagnosis & Adjustment

Diagnose horn non-sound (relay, switch, wiring, horns), test horn relay click, adjust horn tone if applicable, replace horns, torque mounting bolts.

**Keywords:** horn system, relay test, tone adjustment

### Battery Drain Test & Parasitic Load Diagnosis

Perform battery drain test (max 50 mA draw key off), isolate circuits with ammeter, diagnose parasitic loads (glove lamp, radio memory, shorts), repair faulty components.

**Keywords:** battery drain, parasitic load, 50 mA max

### Electrical System Voltage Drop Testing

Perform voltage drop test on circuits (max 0.2V per connection, 0.5V total for starter), use multimeter, identify high resistance points, repair connections.

**Keywords:** voltage drop test, multimeter, high resistance

### Seat Belt/Starter Interlock System Diagnosis

Diagnose interlock no-start (seat belt sensors, wiring, relay), test sensor continuity, bypass for testing only, adjust belt retraction.

**Keywords:** interlock system, belt sensors, no-start diagnosis

### Power Door Lock Electrical Diagnosis

Diagnose power lock non-op (solenoid, switch, wiring, relay), test solenoid resistance, replace lock switch, follow wiring diagram for multi-door system.

**Keywords:** power door locks, solenoid test, lock switch

### Power Window Electrical Diagnosis

Diagnose power window non-op (motor, switch, wiring, circuit breaker), test motor voltage, replace window switch, follow door wiring harness diagram.

**Keywords:** power window, motor voltage, switch replacement

### Power Seat Electrical Diagnosis

Diagnose power seat non-movement (motor, switch, wiring, circuit breaker), test motor draw, replace switch assembly, follow wiring diagram for 6-way seat.

**Keywords:** power seat, motor draw, 6-way switch

### Courtesy & Dome Lamp Diagnosis

Diagnose non-working courtesy/dome lamps (door switches, timer relay, wiring), test switch continuity, replace bulbs, adjust timer delay.

**Keywords:** courtesy lamps, door switches, timer relay

### Clock Diagnosis & Replacement

Diagnose non-running clock (fuse, wiring, ground), test for 12V supply, replace clock assembly, adjust time/set mechanism.

**Keywords:** electric clock, 12V supply, time adjustment

### Ammeter / Alternator Gauge Diagnosis

Diagnose ammeter non-reading (shunt wire, gauge, wiring), test charging output to gauge, replace gauge if stuck, check for battery drain.

**Keywords:** ammeter gauge, shunt wire, battery drain

### Oil Pressure Gauge Sending Unit Test

Test oil pressure sender (resistance decreases with pressure), replace sender, check gauge response, diagnose wiring for opens/shorts.

**Keywords:** oil pressure sender, resistance test, gauge response

### Temperature Gauge Sending Unit Test

Test temp sender resistance (high cold, low hot; typical 200 ohms at 100�F), replace sender, check gauge accuracy, diagnose wiring faults.

**Keywords:** temp sender, resistance test, gauge accuracy

### Fuel Gauge Sending Unit Test & Replacement

Test fuel sender ohms (0 empty - 90 full typical), replace sender assembly, calibrate gauge, check wiring for opens.

**Keywords:** fuel sender, ohms 0-90, gauge calibration

### Cornering Lamps Diagnosis

Diagnose cornering lamps non-operation (switch, relay, wiring), test turn signal linkage activation, replace bulbs, adjust lamp aim.

**Keywords:** cornering lamps, turn linkage, lamp aim

### Ignition Switch & Starter Interlock Diagnosis

Diagnose ignition switch faults (no start, accessory mode issues), test starter interlock (seat belt switch), replace switch assembly, adjust interlock linkage per spec.

**Keywords:** ignition switch, starter interlock, seat belt switch

### Battery Cable Replacement & Torque

Replace battery cables (positive/negative), torque terminal bolts to spec (typically 10�15 ft�lbs), check cable gauge/size per manual, inspect for insulation damage.

**Keywords:** battery cables, terminal torque 10-15 ft-lbs, cable gauge

### Electrical Ground Circuit Diagnosis

Diagnose poor grounds (corrosion, loose bolts), test ground resistance (max 0.1 ohms), clean/repair ground straps (engine to frame, body to chassis), torque ground bolts per spec.

**Keywords:** ground circuits, resistance test, ground straps

### Vacuum Circuit Diagrams Interpretation & Testing

Interpret vacuum diagrams for electrical-vacuum systems (cruise, wipers, de-fogger), test vacuum hoses for leaks (use smoke or gauge), repair/replace hoses/clamps.

**Keywords:** vacuum diagrams, hose leaks, smoke test

### Theft Deterrent System Diagnosis & Arming

Diagnose theft deterrent non-activation (horn, lights, wiring, sensors), test alarm delay (15 sec door open), repair horn relay, arm/disarm system per manual.

**Keywords:** theft deterrent, alarm delay, horn relay

### Custom Cabriolet Padded Roof Electrical Components

Diagnose padded roof electrical issues (motors, switches if power-operated), test wiring, replace components, follow supplement for Eldorado cabriolet specifics.

**Keywords:** padded roof, power motor, Eldorado cabriolet

### Sun Roof Electrical Diagnosis & Repair

Diagnose sun roof non-operation (motor, switch, limit switches, wiring), test motor draw, adjust limit switches, replace motor if stuck, follow wiring diagram.

**Keywords:** sun roof motor, limit switches, wiring diagram

### Low Washer Fluid Indicator Diagnosis

Diagnose indicator non-light (sensor, wiring, bulb, switch), test float sensor continuity, replace sensor, check ground connection.

**Keywords:** washer fluid indicator, float sensor, continuity test

### Controlled Cycle Windshield Wiper System Diagnosis

Diagnose wiper non-cycle (switch, module, motor, wiring), test delay timer, adjust pulse relay, replace wiper motor if draw >5 amps or erratic.

**Keywords:** wiper system, delay timer, pulse relay

### Lamp Monitor System Diagnosis

Diagnose lamp monitor non-indication (fiber optic cables, sensors, wiring), test bulb sensors, repair optic leads, follow diagnosis chart for false positives.

**Keywords:** lamp monitor, fiber optic, bulb sensors

### Rear Window De-Fogger Diagnosis & Repair

Diagnose de-fogger non-operation (grid lines, switch, relay, wiring), test grid continuity (ohms per line), repair broken grid lines with conductive paint, torque connections per spec.

**Keywords:** de-fogger, grid continuity, conductive paint

### Twilight Sentinel Automatic Light Control Diagnosis

Diagnose Twilight Sentinel non-auto on/off (photocell, amplifier, delay timer, wiring), test delay adjustment, replace sensor, follow circuit diagram for faults.

**Keywords:** Twilight Sentinel, photocell test, delay timer

### Guide-Matic Automatic Headlamp Dimmer Diagnosis

Diagnose Guide-Matic non-dim (sensor, amplifier, relay, wiring), test sensitivity adjustment, replace photocell, follow diagnosis chart for over-sensitive/under-sensitive conditions.

**Keywords:** Guide-Matic, photocell test, sensitivity adjustment

### Cruise Control System Diagnosis & Adjustment

Diagnose cruise non-engagement (switch, servo, vacuum hoses, wiring), adjust linkage per spec, test speed sensor, check for vacuum leaks, follow circuit diagram.

**Keywords:** cruise control, servo adjustment, vacuum leaks

### Radio & Antenna Diagnosis & Replacement

Diagnose radio static/no sound (antenna lead, ground, speaker wiring), test antenna mast extension, replace radio unit, adjust trimmer for best reception, follow wiring diagram.

**Keywords:** radio diagnosis, antenna mast, trimmer adjustment

### Instrument Panel Removal & Replacement

Remove instrument panel (disconnect speedometer cable, electrical connectors), replace bulbs/gauges, torque mounting screws per spec, reinstall and test all functions.

**Keywords:** instrument panel R&R, electrical connectors, bulb replacement

### Speedometer & Odometer Diagnosis

Diagnose inaccurate speedometer (cable, gear, head), test cable spin, replace driven gear, calibrate if needed, check for odometer tampering.

**Keywords:** speedometer, cable test, driven gear

### Instrument Panel Gauge Diagnosis & Replacement

Diagnose inaccurate gauges (fuel, temp, oil, amp) using charts, test sending units (e.g., fuel sender ohms 0-90 typical), replace gauges, calibrate if applicable per manual.

**Keywords:** instrument gauges, sending unit test, fuel sender ohms

### Turn Signal & Hazard Lamp Diagnosis

Diagnose non-flashing turn signals (flasher unit, switch, wiring), test hazard flasher, repair bulb sockets, adjust switch timing if applicable.

**Keywords:** turn signals, hazard flasher, switch diagnosis

### Tail & Brake Lamp System Diagnosis

Troubleshoot non-working tail/brake lamps (bulbs, sockets, wiring, turn signal switch), test stop light switch, repair grounds, replace bulbs per spec.

**Keywords:** tail lamps, brake lamps, stop light switch

### Headlamp System Diagnosis & Adjustment

Diagnose dim/no headlamps (switch, relay, wiring, grounds), adjust beam aim per specs (horizontal/vertical), test high/low beam relay, replace bulbs (sealed beam units).

**Keywords:** headlamps, beam aim, high-low relay

### Wiring Harness Inspection & Repair

Inspect wiring harness for chafing, corrosion, loose connections, repair using solder and heat shrink, follow wiring diagram colors and connectors, test continuity with multimeter.

**Keywords:** wiring harness, continuity test, solder repair

### Fuse Block Inspection & Replacement

Inspect fuse block for corrosion/melted fuses, test fuse continuity, replace blown fuses with correct amp rating, check for shorts in circuits.

**Keywords:** fuse block, fuse continuity, circuit short

### Battery Testing & Charging

Load test battery (min 9V under 300A load for 15 sec), check specific gravity (1.260�1.280 typical), charge at max 10 amps slow rate, inspect terminals for corrosion.

**Keywords:** battery load test, specific gravity, terminal corrosion

### Alternator Bench Testing & Overhaul

Bench test alternator output (35�45 amps at 2000 rpm typical), overhaul rotor/stator/diode bridge, check rotor slip rings, torque pulley nut per spec.

**Keywords:** alternator overhaul, bench test, diode bridge

### Test and Replace Voltage Regulator

Test regulator voltage (14.0�14.5V at 2000 rpm typical), adjust or replace if out of spec, check for overcharge/undercharge, inspect wiring for corrosion.

**Keywords:** voltage regulator, 14.0-14.5V, overcharge test

### Diagnose Charging System Low Output

Use diagnosis chart to troubleshoot low output (alternator, regulator, belt tension, wiring), test alternator output (35�45 amps at 2000 rpm typical), check diode bridge for shorts.

**Keywords:** charging system, low output, alternator test

### Starter Motor Bench Testing & Overhaul

Bench test starter free-run (60�100 amps at 10V typical), overhaul armature/brushes/field coils, check commutator runout (max 0.005 in), torque end frame bolts per spec.

**Keywords:** starter overhaul, bench test, commutator runout

### Test and Adjust Starter Solenoid & Relay

Test solenoid pull-in/hold-in coils (resistance specs per manual), adjust solenoid gap if applicable, test relay contacts for voltage drop, replace if draw >10 amps or chattering.

**Keywords:** starter solenoid, relay test, pull-in coil

### Diagnose Starting System No-Crank Condition

Use diagnosis chart to troubleshoot no-crank (battery, starter solenoid, neutral safety switch, wiring), check voltage drop at starter (max 0.5V), test starter relay, inspect connections for corrosion.

**Keywords:** starting system, no-crank, voltage drop, neutral safety switch

### Navigate Electrical Sections & Supplements in Shop Manual

Locate theory of operation, diagnosis charts, adjustments, replacement procedures, wiring diagrams, vacuum diagrams, torque requirements, special tools, and Eldorado-specific electrical notes in Sections 6, 12, 15, and inside back cover.

**Keywords:** manual navigation, Eldorado supplement, wiring diagrams, vacuum diagrams

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*Generated from TLA Toolbox on 4/5/2026*