American Autowire - 1967 Forward Lamp Wire Harness-Chevy Truck - 21250DI
$316.35
DESCRIPTION
American Autowire - 1967 Forward Lamp Wire Harness-Chevy Truck - 21250DI
Restore your classic Chevy truck's electrical system while upgrading its charging system with this 1967 Chevrolet Truck Front Light Wiring Harness from American Autowire.
Designed specifically for 1967 Chevrolet pickups equipped with factory gauges, this Factory Fit wiring harness is modified for a driver-side mounted GM SI-series internally regulated alternator.
Whether you're restoring a 1967 Chevy C10, rebuilding a C20, or replacing deteriorated wiring while converting to an internally regulated alternator, this harness provides an original-style replacement designed for your truck's electrical configuration.
American Autowire's Factory Fit harnesses are manufactured according to original General Motors specifications. Each harness arrives fully assembled and taped, connects at the original firewall location, and follows factory-style routing through the engine compartment.
Unlike the original externally regulated charging system, this modified harness accommodates a compatible internally regulated alternator conversion without requiring the original external voltage regulator wiring.
Manufacturer: American Autowire
Manufacturer Part Number: 21250DI
Product Type: Front Light Wiring Harness
Product Line: Factory Fit
Vehicle Year: 1967
Vehicle Application: Chevrolet Pickup Trucks
Instrumentation: Factory Gauges
Alternator Type: GM SI-Series Internally Regulated
Alternator Location: Driver Side
Alternator Application: 1985 and Earlier GM SI-Series
External Voltage Regulator Wiring: Not Included
Quantity: Sold Individually
Features
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Designed specifically for 1967 Chevrolet pickup trucks
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Compatible with factory-gauge instrumentation
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Modified for a driver-side mounted internally regulated alternator
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Intended for compatible 1985-and-earlier GM SI-series alternators
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Supports conversion from an externally regulated charging system
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Does not include original external voltage regulator wiring
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Manufactured by American Autowire
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Part of the Factory Fit original-style replacement wiring line
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Manufactured according to original GM specifications
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Fully assembled and taped for installation
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Connects at the original firewall harness location
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Follows factory-style routing through the engine compartment
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Helps replace aging, damaged, or previously modified front lighting wiring
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Ideal for classic Chevy truck restorations and charging system upgrades
Vehicle Fitment
1967 Chevrolet C-Series – 2WD Trucks
Potential applications include:
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1967 Chevrolet C10
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1967 Chevrolet C20
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1967 Chevrolet C30
1967 Chevrolet K-Series – 4WD Trucks
Potential applications include:
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1967 Chevrolet K10
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1967 Chevrolet K20
Required Vehicle Configuration
This harness is designed for trucks equipped with:
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Factory-gauge instrumentation
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Driver-side mounted alternator
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Compatible GM SI-series internally regulated alternator
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Compatible original-style firewall wiring connections
Important: American Autowire lists part 21250DI for 1967 Chevrolet pickups. Verify compatibility with your specific truck model, instrumentation, alternator, and existing electrical connections before ordering.
Designed for Driver-Side Internally Regulated Alternators
One of the most important features of American Autowire part 21250DI is its modified charging system configuration.
Driver-Side Alternator Mounting
This harness is designed for Chevrolet pickups using a compatible GM SI-series internally regulated alternator mounted on the driver side of the engine compartment.
Trucks equipped with passenger-side mounted alternators require a different harness configuration.
Internally Regulated Alternator Conversion
Original 1967 Chevrolet pickups commonly used alternators with external voltage regulators.
When converting to a compatible internally regulated alternator, the charging system wiring requirements change.
American Autowire part 21250DI is configured for this conversion rather than the original externally regulated alternator configuration.
This harness does not include the original external voltage regulator wiring.
GM SI-Series Alternator Compatibility
American Autowire specifies this harness for 1985-and-earlier GM SI-series internally regulated alternators.
Before ordering, confirm your alternator's regulator type, connector arrangement, and mounting location.
What If My Alternator Is Mounted on the Passenger Side?
American Autowire offers a passenger-side version of this harness:
Part 21250PI – 1967 Chevy Truck Front Light Wiring Harness, Factory Gauges, Passenger-Side Internally Regulated Alternator
Choosing the correct harness helps maintain compatibility with your charging system and reduces the need for unnecessary wiring modifications.
Designed for Factory Gauge Instrumentation
American Autowire offers different front light wiring harnesses depending on the original instrument panel configuration.
Factory Gauges
Part 21250DI is specifically designed for 1967 Chevrolet pickups equipped with factory gauges.
Trucks equipped with factory warning lights require a different front light wiring harness.
Why Does Instrumentation Matter?
Factory gauges and warning lights have different electrical requirements.
Choosing the correct harness helps maintain compatibility with the truck's existing electrical system.
If your truck has been converted from warning lights to gauges, verify its current wiring configuration before ordering.
Why Replace Your Chevy Truck's Front Light Wiring Harness?
After decades of use, original wiring can develop electrical problems caused by deteriorated insulation, corrosion, vibration, and previous repairs.
Replace Aging Factory Wiring
Original wiring insulation may become brittle or cracked, while electrical terminals and connectors can deteriorate over time.
Replacing the harness provides an alternative to repairing numerous damaged wires individually.
Restore Front Lighting Connections
American Autowire explains that most front light harnesses include circuits associated with:
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Headlights
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Parking Lights
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Front Turn Signals
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Horn and Horn Relay
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Charging System Connections
Exact circuit coverage varies by application. Consult your factory service manual to confirm the circuits included in your truck's harness.
Maintain Original-Style Wiring
American Autowire's Factory Fit products are designed for classic vehicle restorations where maintaining original-style electrical connections and routing is important.
Accommodate an Alternator Upgrade
This modified harness is configured for a compatible driver-side internally regulated alternator conversion.
Fully Assembled for Installation
The harness arrives assembled and taped, connects at the original firewall location, and follows factory-style routing through the engine compartment.
Important Fitment & Installation Information
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Designed for 1967 Chevrolet pickup trucks only.
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Requires factory-gauge instrumentation.
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Designed for a driver-side mounted internally regulated alternator.
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Intended for compatible 1985-and-earlier GM SI-series alternators.
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Does not include original external voltage regulator wiring.
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Trucks retaining the original externally regulated alternator require a different harness.
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Passenger-side alternator installations require a different harness.
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Trucks equipped with factory warning lights require a different harness.
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Verify original firewall connections and existing wiring before ordering.
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Vehicles with aftermarket electrical modifications may require additional installation work.
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Inspect electrical grounds, terminals, and related connections during installation.
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This is a front light wiring harness, not a complete vehicle wiring kit.
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Consult your factory service manual and alternator manufacturer's installation instructions.
Frequently Asked Questions
Will this front light wiring harness fit my 1967 Chevy C10?
Yes, provided your 1967 Chevrolet C10 has factory gauges and a compatible driver-side mounted GM SI-series internally regulated alternator.
Does this harness fit a 1968 Chevy C10?
No. American Autowire lists part 21250DI specifically for 1967 Chevrolet pickups.
For a 1968 truck, select a harness designed for its model year and electrical configuration.
Will this work on a 1967 Chevy K10 4x4?
American Autowire lists this harness for 1967 Chevrolet pickups. Verify your K10's original connections, instrumentation, and alternator configuration before ordering.
What does DI mean in American Autowire part 21250DI?
DI identifies the driver-side internally regulated alternator configuration.
What is the difference between American Autowire 21250, 21250DI, and 21250PI?
These harnesses are designed for corresponding 1967 Chevrolet pickup applications equipped with factory gauges.
The primary difference is the alternator configuration:
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21250: Original externally regulated alternator
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21250DI: Driver-side internally regulated alternator
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21250PI: Passenger-side internally regulated alternator
What is the difference between 21250DI and 23440DI?
Both harnesses are designed for 1967 Chevrolet pickups with driver-side internally regulated alternators.
However, they are designed for different instrumentation:
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21250DI: Factory gauges
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23440DI: Factory warning lights
Will this harness work with my original external voltage regulator?
No. This harness is configured for a compatible internally regulated alternator conversion and does not include original external voltage regulator wiring.
Can I Use This Harness With a One-Wire Alternator?
A compatible one-wire internally regulated alternator may be used, but the two-wire SI-series connector should not be connected when installing a one-wire alternator.
Always follow the alternator manufacturer's wiring instructions.
Is this harness designed for factory warning lights?
No. Part 21250DI is designed for trucks equipped with factory gauges.
Does this harness come assembled?
Yes. American Autowire Factory Fit harnesses arrive fully assembled and taped.
Where does this harness connect?
It plugs into the original firewall harness location and follows factory-style routing through the engine compartment.
Will this fit a 1967 GMC pickup?
This specific part number is listed for Chevrolet pickups. GMC compatibility has not been confirmed.
Does this replace the entire truck wiring system?
No. This product replaces the front light wiring harness. Engine, dash, rear lighting, and other wiring harnesses are separate components.
Restore Your 1967 Chevy Truck's Electrical System
Whether you're replacing deteriorated front lighting wiring, restoring a classic C10, or converting to a driver-side internally regulated alternator, the American Autowire 21250DI Front Light Wiring Harness provides an original-style replacement designed for your truck's electrical configuration.
Find the wiring harnesses, electrical components, and restoration parts you need at Tuckers Classic Auto Parts.
Helping Keep Classic Trucks on the Road Since 1993.