Standard Ignition ALH139 ABS Wheel Speed Sensor Wiring Harness - Front

ABS Wheel Speed Sensor Harness for Tacoma

Standard Ignition ALH139 is an ABS wheel speed sensor wiring harness for front applications on select Toyota Tacoma trucks. It connects the antilock brake speed sensor circuit with the correct female and male terminal interfaces for a direct-fit repair.

Compatible With 2015-2018 Toyota Tacoma, front. This part cross-references ACDelco 1P3789 for the same application.

Key Features

• ABS wheel speed sensor wiring harness for the front position
• Female connector design with 2 connectors and oval connector shape
• Male blade terminals with 4 terminal contacts
• Built for antilock brake speed sensor harness replacement
• Standard Ignition ALH139 for select Toyota Tacoma models

Detailed Description

This Standard Ignition ALH139 harness is used in the front ABS wheel speed sensor circuit on 2015-2018 Toyota Tacoma models. It restores the electrical connection between the wheel speed sensor and the vehicle harness, helping maintain proper antilock brake system signal transfer. The connector layout includes a female oval connector and male blade terminals to match the specified application.

When replacing a damaged or corroded harness on a Toyota Tacoma, ALH139 provides the correct fitment for the front position and supports a clean electrical connection at the sensor interface. Use this part when the original harness shows wear, broken terminals, or connector damage.

What It Is Used For

• Broken or frayed ABS wheel speed sensor wiring at the front wheel
• Corroded or loose connector terminals in the antilock brake circuit
• Intermittent wheel speed sensor signal loss
• ABS warning light caused by harness damage
• Electrical connection issues at the front sensor location

Installation Notes and Tips

Verify connector shape, terminal style, and front-position routing before installation. Inspect the sensor connector, harness clips, and nearby wiring for heat damage or abrasion before connecting the new harness. Confirm the vehicle application against the part number ALH139 and the Tacoma model year before service.

Quality Assurance

Standard Ignition supplies replacement electrical components for automotive repair applications. ALH139 is listed with direct fitment for 2015-2018 Toyota Tacoma front ABS wheel speed sensor harness service and is referenced by interchange part numbers for application matching.