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Discover the ultimate selection of 3 Prong electrical components for your semi truck, designed to meet all your wiring and lighting needs. Our extensive range includes the Electrical Pigtail 3 Prong Angled, 3-Pin Right Angle STT Plug with 10 Inch Leads, and the 3-Pin 12 Inch Lead Continuous Wiring Harness available in rolls of 100. Enhance your setup with the 3-Pin Male/Female 6 Inch Extension Harness, 3-Pin LED Load Equalizer, and the 3-Pin Straight PL-3 Plug Connector. We also offer specialized adapters like the PL3 Adapter Plug, Molded LED 3-Wire Plug, and the 3-Pin Male to Male Weather Pack to PL-3 Adapter. For those looking for bulk options, consider our 2 Pack of 3-Prong Plug Wire Plugs, 100 Foot Continuous Wiring Harness Rolls, and 3 Prong Wiring Harness with 10 Inch Spacing. Our products are perfect for LED lighting solutions, including the Lock Connector to 3 Prong Pigtail, Superseal to 3 Prong Pigtail, and various right angle and straight plug configurations. Choose from a variety of lengths and styles, such as the 12" Lead 3 Wire Pigtail with 3 Prong Right Angle Plug, Headlight Pigtail, and 3 Prong Light Adaptor Plugs for 2 Function Lights. We also provide continuous wire harness rolls with customizable spacing, triple female plugs for 0.180 male bullets, and triple terminal pigtail wire harnesses. Whether you need a 3 Prong Round Plug, a Straight 3 Prong Light Plug with 11" Lead Wire, or a Right Angle 3 Prong Light Plug with 11 Inch Lead Wire, we have you covered. Our selection includes 3 Prong Light Adaptor Plugs from 1 Male to 2 Females, Weather Pack Male 3 Pin Adapter Plugs to Standard Right Angle, and Adaptor Wires for 9007 Bulbs. With options like the Triple Male Right Angle Bullet Plug Wire Harness with 12 Inch Lead and 2 Prong Wiring Harnesses, you can customize your setup to perfection. Shop now and ensure your semi truck's electrical system is reliable and efficient with our top-quality 3 Prong products. Perfect for models like the Peterbilt 379, Peterbilt 389, and Peterbilt 359, our components are designed to fit seamlessly. Whether you're converting 33mm to inches or working with a 3157 bulb, our products are engineered for precision and durability. Don't miss out on enhancing your 379 Peterbilt or 389 Peterbilt with our premium electrical solutions. Explore our range today and experience the difference in quality and performance.