Collection: LS/LT Electrical Wiring
Shop high-performance LS and LT electrical wiring components designed for reliable power delivery, proper system integration, and improved engine performance. From wiring harnesses and connectors to electrical accessories, these components help ensure consistent operation and easy installation. Ideal for LS and LT engine swaps, street builds, and high-performance applications.
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GM LS VVT to Non-VVT Camshaft Sensor Connector Plug-and-Play Adapter
Vendor:Top Street PerformanceSKU: 81040Regular price $30.80Sale price $30.80 Regular priceUnit price / per$35.00Save $4.20 -
GM LS1 to LS2 Throttle Body Harness Adapter
Vendor:Top Street PerformanceSKU: 81032Regular price $32.58Sale price $32.58 Regular priceUnit price / per$37.03Save $4.45 -
GM LS1 to LS3 MAP Sensor Harness Adapter
Vendor:Top Street PerformanceSKU: 81033Regular price $32.58Sale price $32.58 Regular priceUnit price / per$37.03Save $4.45 -
GM LS 4-Flat to 2-Pin Alternator Adapter Cable
Vendor:Top Street PerformanceSKU: 81029Regular price $30.80Sale price $30.80 Regular priceUnit price / per$35.00Save $4.20 -
Dual Electric Fan Upgrade Wiring Harness for 96-06 ECU Control
Vendor:Top Street PerformanceSKU: WH1111Regular price $36.67Sale price $36.67 Regular priceUnit price / per$41.68Save $5.01 -
03-07 GM LS Truck Drive-by-Wire Engine and 4L60E 15-Pin Transmission Wiring Harness
Vendor:Top Street PerformanceSKU: WH1212-2Regular price $488.88Sale price $488.88 Regular priceUnit price / per$555.55Sold out -
Universal 20-Circuit Wiring Harness
Vendor:Top Street PerformanceSKU: WH1220Regular price $285.19Sale price $285.19 Regular priceUnit price / per$324.08Save $38.89 -
LS1 3-Wire to LS3 5-Wire Mass Air Flow Sensor Adapter with Intake Air Temperature Sensor Plug
Vendor:Top Street PerformanceSKU: 81030Regular price $35.20Sale price $35.20 Regular priceUnit price / per$40.00Save $4.80 -
GM LS MAP Sensor Harness Extension
Vendor:Top Street PerformanceSKU: 81034Regular price $32.58Sale price $32.58 Regular priceUnit price / per$37.03Save $4.45 -
GM LS Camshaft Position Sensor Bracket with Wiring Harness
Vendor:Top Street PerformanceSKU: 81058Regular price $27.15Sale price $27.15 Regular priceUnit price / per$30.85Save $3.70 -
03-07 GM LS Truck EV6 Injector Drive-by-Wire Engine and 4L80E Transmission Wiring Harness
Vendor:Top Street PerformanceSKU: WH1212-1Regular price $488.88Sale price $488.88 Regular priceUnit price / per$555.55Sold out
About Our LS/LT Electrical Wiring
The electrical wiring system is a critical part of any LS or LT engine, responsible for connecting and powering essential components such as ignition coils, fuel injectors, sensors, and the engine control module (ECM). Proper wiring ensures accurate signal transmission and reliable engine operation under all conditions.
Modern LS and LT engines rely heavily on electronic control systems to manage fuel delivery, ignition timing, and overall engine performance. These systems depend on high-quality wiring harnesses and connections to function correctly, making electrical reliability a key factor in performance and drivability.
LS engines utilize a coil-near-plug ignition design, where each cylinder has its own ignition coil controlled by the ECM. This system improves spark accuracy and efficiency compared to older distributor-based setups. Proper wiring is essential to ensure each coil receives the correct signal and voltage for consistent combustion.
Electrical wiring components such as harnesses, connectors, and extensions play an important role in both stock and modified builds. In LS swap applications, custom wiring solutions are often required to integrate the engine into a different vehicle platform while maintaining full functionality and reliability.
Upgrading or replacing wiring components helps prevent common issues such as poor connections, voltage drops, and electrical interference. These problems can lead to misfires, starting issues, or inconsistent engine performance if not properly addressed.
High-quality LS and LT wiring components are designed for durability, heat resistance, and secure connections, ensuring long-term reliability in demanding environments. Whether you're completing a basic installation or building a high-performance setup, proper electrical wiring is essential for achieving consistent performance and dependable operation.






