GMC Safari 1985-1994 Electrical Specifications
Explore the complete electrical specifications for the 1985-1994 GMC Safari, including wiring diagrams, fuse box layouts, alternator output, battery requirements, and lighting details. Ideal for repairs, maintenance, and upgrades.
Overview Specifications
This document provides detailed electrical specifications for the 1985-1994 GMC Safari. It is designed to assist technicians, enthusiasts, and owners in understanding the vehicle's electrical systems, including wiring, components, and key performance metrics. Use the search functionality to locate specific terms or navigate through sections to explore detailed information about the electrical systems.
How to Use
Use the search bar to enter keywords related to the electrical system, such as 'alternator' or 'fuse box'. Results will highlight relevant sections and subsections for quick access.
Scroll through the document or use the table of contents to jump to major sections like 'Battery and Charging System' or 'Lighting and Signals'. Subsections provide detailed technical points for each topic.
Key Specifications
Battery Voltage
12 volts
Alternator Output
100 amps
Headlight Wattage
55/60 watts
Fuse Amperage Range
5-30 amps
Relay Amperage
15-40 amps
Available Specifications
Battery and Charging System
This section covers the battery specifications, alternator output, and charging system components for the 1985-1994 GMC Safari. It includes details on voltage, amperage, and maintenance tips to ensure optimal performance.
Battery and Charging System
This section covers the battery specifications, alternator output, and charging system components for the 1985-1994 GMC Safari. It includes details on voltage, amperage, and maintenance tips to ensure optimal performance.
Battery Specifications
- 12-volt lead-acid battery
- Cold Cranking Amps (CCA): 650
- Reserve Capacity (RC): 120 minutes
- Group size: 24F
- Maintenance-free design
- Terminal type: Top post
Alternator Output
- Output voltage: 14.2-14.8 volts
- Amperage rating: 100 amps
- Belt-driven design
- Internal voltage regulator
- Pulley size: 2.5 inches
- Replacement interval: 100,000 miles
Lighting and Signals
This section details the lighting and signaling systems, including headlights, taillights, turn signals, and interior lighting. It provides specifications for bulb types, wattage, and wiring configurations.
Lighting and Signals
This section details the lighting and signaling systems, including headlights, taillights, turn signals, and interior lighting. It provides specifications for bulb types, wattage, and wiring configurations.
Exterior Lighting
- Headlight type: Halogen
- Headlight wattage: 55/60 watts
- Taillight bulb: 1157 dual-filament
- Turn signal bulb: 1156 single-filament
- Fog light option: Optional accessory
- Wiring harness: Color-coded
Interior Lighting
- Dome light bulb: 561
- Map light bulb: 194
- Dashboard illumination: LED backlighting
- Cargo area light: Optional
- Switch type: Rocker and push-button
- Fuse rating: 10 amps
Fuse and Relay System
This section outlines the fuse and relay system, including fuse box locations, amperage ratings, and circuit protection details. It also covers common troubleshooting tips.
Fuse and Relay System
This section outlines the fuse and relay system, including fuse box locations, amperage ratings, and circuit protection details. It also covers common troubleshooting tips.
Fuse Box Layout
- Location: Under the dashboard
- Number of fuses: 20
- Amperage range: 5-30 amps
- Blade-type fuses
- Color-coded for easy identification
- Spare fuses included
Relay Functions
- Headlight relay: 30 amps
- Fuel pump relay: 20 amps
- Horn relay: 15 amps
- Starter relay: 40 amps
- Relay location: Engine compartment
- Replacement interval: As needed
Search Specifications
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Component Specifications
Overview
- Type
- 12V DC system
- Configuration
- Negative ground
- Platform
- Conventional automotive electrical system
- Material
- Copper wiring, plastic insulation
- Location
- Distributed throughout vehicle
Dimensions
- Battery Length
- 10.5 inches (26.67 cm)
- Battery Width
- 7 inches (17.78 cm)
- Battery Height
- 8.5 inches (21.59 cm)
- Alternator Diameter
- 5.25 inches (13.34 cm)
- Alternator Length
- 7.75 inches (19.69 cm)
- Starter Motor Diameter
- 4.5 inches (11.43 cm)
- Starter Motor Length
- 6 inches (15.24 cm)
Materials
- Wiring
- Copper with PVC insulation
- Battery Case
- Polypropylene
- Alternator Housing
- Aluminum
- Starter Motor Housing
- Steel
- Fuse Box
- Thermoplastic
Features
- Lighting
-
- Dual headlight system
- Dome light with door switches
- Brake lights
- Turn signals
- Power Distribution
-
- Fuse-protected circuits
- Relay-controlled high-current devices
- Centralized fuse box
- Circuit breakers for critical systems
- Charging System
-
- 55-100 amp alternator
- Voltage regulator
- Battery charge indicator
- Battery temperature sensor
- Ignition System
-
- Electronic ignition module
- Distributor with vacuum advance
- Spark plug wires
- Ignition coil
- Accessory Power
-
- Cigarette lighter
- Radio power supply
- Power windows (optional)
- Power door locks (optional)
Safety Features
- Circuit Protection
-
- Blade-type fuses
- Circuit breakers
- Fusible links
- Wiring Safety
-
- Color-coded wiring
- Insulated connectors
- Rubber grommets at penetration points
- Battery Safety
-
- Vented battery case
- Battery hold-down clamp
- Positive terminal cover
Comfort Features
- interior Lighting
-
- Dome light with delay
- Map lights
- Instrument panel illumination
- Climate Control
-
- Blower motor speed control
- A/C compressor clutch control
- Heater fan control
- Entertainment
-
- AM/FM radio
- Cassette player (optional)
- Speaker system
- Convenience
-
- Power windows (optional)
- Power door locks (optional)
- Remote keyless entry (optional)
Accessories
- Exterior
-
- Trailer wiring harness
- Fog lights
- Roof rack lights
- interior
-
- Cargo area light
- Additional power outlets
- Upgraded stereo system
- Performance
-
- High-output alternator
- Performance ignition system
- Upgraded battery
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Battery terminal cleaning
- Alternator belt inspection
- Fuse inspection
- Ground connection check
- Wiring harness inspection
- Maintenance Notes
- Check for corrosion at all electrical connections regularly
Warranty
- Battery Warranty
- Miles: 36,000Years: 3Coverage: Replacement for defective battery
- Alternator Warranty
- Miles: 50,000Years: 5Coverage: Repair or replacement
- Starter Warranty
- Miles: 50,000Years: 5Coverage: Repair or replacement
- Electrical System Warranty
- Miles: 36,000Years: 3Coverage: Repair of wiring and components
Production Details
- Manufacturer
- Delco Electronics
- Manufacturing Process
-
- Automated wiring harness assembly
- Precision winding of alternator and starter components
- Quality control testing of all electrical components
- Quality Control
- Testing: Voltage output testing, Current draw testing, Insulation resistance testingStandards: SAE J1128, SAE J560
- Sustainability Practices
-
- Recyclable wiring insulation
- Lead-acid battery recycling program
- Copper recovery from old wiring
- Production Metrics
- Daily Output: 500 unitsDefect Rate: 0.5%Energy Usage: 15 kWh per unit
Service Information for electrical Service
Maintenance and service requirements specific to the electrical system
- Inspect battery terminals and cables
- Check alternator belt tension
- Test battery voltage and charge
- Inspect wiring harness for damage
- Check all exterior lights
Clean battery terminals with baking soda solution if corrosion is present
- Load test battery
- Check alternator output
- Inspect starter motor operation
- Test all fuses and relays
- Check ground connections
Use dielectric grease on all electrical connections during reassembly
- Replace battery if necessary
- Inspect and clean alternator brushes
- Check starter motor brushes
- Test all switches and controls
- Inspect and repair wiring harness as needed
Consider upgrading to maintenance-free battery if replacing
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What electrical components are compatible with the 1985-1994 GMC Safari?
What electrical components are compatible with the 1985-1994 GMC Safari?
The 1985-1994 GMC Safari uses a 12-volt electrical system. Compatible components include alternators rated at 63-100 amps, standard Group 24 or 34 batteries, and wiring harnesses designed for GM A-body vans. Aftermarket parts like headlights, taillights, and radios must match the vehicle's specifications. Always verify compatibility with the vehicle's VIN and consult the service manual for precise details.
Q2 What are the maintenance requirements for the electrical system in a 1985-1994 GMC Safari?
What are the maintenance requirements for the electrical system in a 1985-1994 GMC Safari?
Regular maintenance includes inspecting the battery terminals for corrosion, checking the alternator belt tension, and testing the battery voltage every 6 months. Replace spark plugs and wires every 30,000 miles, and inspect the wiring harness for wear or damage annually. Ensure all fuses and relays are functioning correctly. Follow the service manual for detailed intervals and procedures.
Q3 How do I replace the alternator in a 1985-1994 GMC Safari?
How do I replace the alternator in a 1985-1994 GMC Safari?
To replace the alternator, disconnect the negative battery cable. Remove the serpentine belt using a wrench to release tension. Unbolt the alternator and disconnect the electrical connectors. Install the new alternator, reconnect the electrical connectors, and reattach the serpentine belt. Tighten all bolts to the manufacturer's specifications and reconnect the battery cable. Test the system to ensure proper operation.
Q4 What should I do if my GMC Safari's electrical system is malfunctioning?
What should I do if my GMC Safari's electrical system is malfunctioning?
Start by checking the battery voltage with a multimeter; it should read 12.6V when off and 13.7-14.7V when running. Inspect fuses and relays for damage. Test the alternator output and ensure all connections are secure. If issues persist, use a wiring diagram to trace circuits for shorts or breaks. Consult a professional if the problem is unresolved.
Q5 How can I optimize the electrical performance of my 1985-1994 GMC Safari?
How can I optimize the electrical performance of my 1985-1994 GMC Safari?
Upgrade to a high-output alternator if using additional accessories. Use LED bulbs for lower power consumption. Ensure all grounds are clean and secure. Install a battery maintainer for long-term storage. Regularly inspect and clean electrical connections to prevent corrosion. Follow the service manual for specific performance-enhancing modifications.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1985-1994 GMC Safari Service Manual
Coming SoonComprehensive guide covering electrical system diagnostics, repairs, and maintenance for the 1985-1994 GMC Safari.
Technical Service Bulletin: Electrical System Updates
Coming SoonBulletin detailing common electrical issues and recommended updates for the 1985-1994 GMC Safari.
GMC Safari Parts and Accessories Catalog
Coming SoonCatalog listing OEM and aftermarket electrical components for the 1985-1994 GMC Safari.
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