Dorman 645-564 Turn Signal Switch Connector

Dorman 645-564 Turn Signal Switch Connector

Restore a secure electrical connection with this Dorman turn signal switch connector. Built for clean-looking repairs and accessory installations, it uses weatherproof terminals and a locking tab to help maintain a reliable quick-disconnect connection in the vehicle wiring harness.

Key Features

• Turn signal switch connector for electrical repair and harness service
• Weatherproof terminals help protect the connection point
• Locking tab supports a secure quick-disconnect fit
• 3-wire design with 20-gauge wire specification
• Female blade terminal style with tin brass terminal material
• Direct-fit pigtail connector for clean routing and serviceability

Detailed Description

Dorman 645-564 is a turn signal switch connector designed for electrical repairs where the original connector is damaged, corroded, or no longer locks in place. The pigtail-style design supports a neat installation and a dependable connection at the switch or harness interface. This connector is listed with female blade terminals, 20-gauge wire, and tin brass terminal material for service on the affected Chevrolet Corvette, Cadillac STS, and Saturn applications.

This part cross-references Standard Ignition S-1065 for the same application.

What It Helps Fix

• Broken or loose turn signal switch connector terminals
• Intermittent lighting or signal operation caused by poor contact
• Corrosion at the connector interface
• Damaged wiring pigtails during electrical repair
• Failed quick-disconnect locking engagement

Installation Notes and Tips

• Verify connector shape, terminal style, and wire count before installation.
• Match the existing harness wiring carefully to preserve circuit function.
• Inspect the mating switch or harness side for heat damage or corrosion before reconnecting.
• Use proper electrical repair practices when splicing into the vehicle harness.

Quality Assurance

Dorman supplies replacement electrical connectors engineered for serviceable repairs and consistent fitment. This part number, 645-564, is cataloged for multiple model years including 2006-2013 Chevrolet Corvette, 2005-2011 Cadillac STS, and Saturn SL, SC, and SW applications.