Datsun 240Z LS1 Swap Wiring Harness | Wiring Specialties Brand new LS1 swap wiring harness for a Datsun 240Z. No cores or modifications needed. Made in USA with a start-up guarantee. Datsun LS1 / Vortec Swap Wiring Harness | Wiring Specialties This harness is specifically engineered for a Classic Datsun 510, 240z, 260z, 280z, Roadster etc. with the GM LS1 Cable Throttle engine swap. It was developed in house on an actual LS1 engine to ensure a perfect fit to all engine connections. Wiring Specialties offers a number of options for common performance upgrades for this product.