ACDelco GM PT2145 88861073 Alternator Conversion Jumper Harness, Replacement with 12 Month Warranty & Made in USA

Upgrade or repair a compatible General Motors charging system with the Wholesale Sensors Replacement for ACDelco GM PT2145 / 88861073 Alternator Conversion Jumper Harness. Made in the USA and engineered as a perfect OEM-style replacement, this alternator wiring adapter is designed to meet or exceed original functional specifications while providing a clean electrical connection for compatible GM alternator conversion applications.

The PT2145 harness is especially useful when converting a compatible older GM charging system from an SI-series alternator to a newer CS-series alternator. Rather than unnecessarily modifying the vehicle’s original wiring harness, the adapter provides the required connection between compatible charging-system components.

Replacement for ACDelco PT2145 and GM 88861073

The primary interchange numbers for this alternator jumper harness are ACDelco PT2145 and GM 88861073. GM’s official parts catalog confirms that 88861073 corresponds to ACDelco PT2145. GM classifies the original ACDelco component as a wiring harness connector manufactured for appropriate fit, form, and function. GM Parts

Additional documented cross-reference numbers include:

PT2145
88861073
12083462
Dorman 85841
Auveco 13548
6294493
12101909
89057714

Auveco’s interchange information specifically cross-references GM 88861073 with ACDelco PT2145 and Dorman 85841. Another automotive connector catalog identifies 12083462, 88861073, and PT2145 as replacement numbers for the same type of alternator conversion harness. AutoFastenersAndClips.com

Always compare the original connector, alternator configuration, wiring, and part number before ordering. Similar GM alternator connectors are not necessarily electrically interchangeable simply because they appear to fit.

Designed for SI-to-CS Alternator Conversions

One of the primary uses for the PT2145 is converting compatible older GM charging systems from an SI-series alternator to a CS-series alternator.

A documented automotive wiring application identifies GM 12083462 / 88861073 / PT2145 as an alternator harness for 1988-1995 GM applications, specifically describing it as an adapter from an SI-series alternator to a CS-series alternator for vehicles equipped with an alternator warning light. Portland Wiring Harness

This makes the Wholesale Sensors replacement useful for classic GM restoration projects, charging-system upgrades, alternator replacements, custom builds, and other applications where the existing vehicle wiring needs to interface with the compatible newer alternator configuration.

Compatible GM Applications

The PT2145 is best selected by charging-system configuration and part number, rather than vehicle make and model alone.

The documented 1988-1995 application covers compatible General Motors vehicles using the required SI-to-CS conversion arrangement and alternator warning-light circuit. Depending on the vehicle and charging system, this can include select Chevrolet, GMC, Buick, Cadillac, Oldsmobile, and Pontiac applications. Portland Wiring Harness

However, General Motors used numerous alternators, regulators, wiring configurations, and charging-system designs across its vehicles. Engine swaps and alternator upgrades can also mean that the alternator currently installed is different from the vehicle’s factory configuration.

For this reason, do not determine fitment by year, make, and model alone. Confirm that your application requires ACDelco PT2145, GM 88861073, or the corresponding SI-to-CS alternator conversion configuration.

Original PT2145 Connector Configuration

Technical specifications for the original ACDelco PT2145 identify it as an alternator conversion jumper harness with four blade-terminal positions and two wires. SD Parts

The adapter provides the electrical interface needed between compatible wiring and alternator configurations while helping retain a clean, serviceable installation.

This is particularly valuable for restoration and upgrade projects because modifying the factory wiring unnecessarily can make future diagnosis and service more difficult.

Made in the USA Quality

The Wholesale Sensors replacement for PT2145 is Made in the USA using automotive-grade materials selected for reliable electrical performance.

The harness incorporates durable insulated wiring, secure terminals, and molded electrical connectors designed for automotive charging-system environments. Each Wholesale Sensors harness is rigorously tested for electrical continuity, connection integrity, terminal retention, wiring quality, and proper fit before shipment.

Charging-system wiring operates in an engine compartment exposed to vibration, heat, dirt, and other demanding conditions. Reliable terminals and secure connections are essential to maintaining dependable alternator operation.

Helps Repair Damaged Alternator Connections

The PT2145 can also provide a replacement solution when the existing conversion harness has deteriorated.

ACDelco service information identifies cracked or broken connector housings, contaminated connectors, damaged or spliced wiring, voltage drop, and electrical connection problems as signs that a connector or pigtail may require service. SD Parts

A poor alternator connection can contribute to charging-system problems, but replacing the harness should only be done after proper diagnosis.

Symptoms such as a charging warning light, low system voltage, intermittent charging, or battery problems can also be caused by the alternator, battery, battery cables, grounds, belt drive, terminals, fuses, or other charging-system components.

Straightforward Alternator Conversion

When used with the correct components, the PT2145 provides a convenient alternative to unnecessarily cutting apart the vehicle’s original charging harness.

Before installation, disconnect the battery according to the vehicle manufacturer’s service procedure. Compare the replacement harness with the existing connector and verify the alternator configuration before making any connections.

Inspect the alternator terminals, vehicle-side wiring, battery cables, and grounding points for corrosion, overheating, damaged insulation, loose connections, or previous modifications.

Once compatibility has been confirmed, connect the jumper harness securely and route it away from exhaust components, belts, pulleys, fans, sharp edges, and other areas that could damage the wiring.

After installation, reconnect the battery and verify charging-system voltage and warning-light operation according to the appropriate service procedure.

Important Compatibility Considerations

Not every SI-to-CS alternator conversion uses the same electrical arrangement. The vehicle’s existing alternator warning-light circuit and charging-system wiring should be verified before installation.

Do not select an alternator jumper harness solely because its connector appears to fit. Incorrect wiring can result in charging problems or electrical damage.

The safest approach is to confirm PT2145, 88861073, 12083462, or another verified interchange number and compare the existing charging-system configuration with the replacement before installation.

Made in USA With 12-Month Warranty

Wholesale Sensors specializes in dependable replacement sensors, connectors, pigtails, and wiring harnesses for automotive, commercial, industrial, and equipment applications. Wholesale Sensors currently catalogs this product as CBL-29, a Made in USA replacement for ACDelco GM PT2145 / 88861073. Wholesale Sensors

The Wholesale Sensors Replacement for ACDelco GM PT2145 / 88861073 Alternator Conversion Jumper Harness combines Made in USA construction, automotive-grade wiring, direct replacement functionality, and rigorous electrical testing.

Every harness is backed by a strong 12-month warranty and responsive USA-based support, making it a dependable choice for professional automotive technicians, restoration shops, classic GM enthusiasts, mechanics, performance builders, and DIY vehicle owners completing compatible GM charging-system repairs or SI-to-CS alternator conversions.