BMW E46 LS1 Wiring Harness | Wiring Specialties Our Pro Series harness completely replaces your old OEM harness so you can forget about those electrical gremlins. This harness is perfect for a BMW E46 1999-2006 with the GM LS1 Cable Throttle engine swap. This harness was developed in house on an actual LS1 engine to ensure a perfect fit to all engine connections. BMW E46 LS2 Swap Wiring Harness | SIKKY Brand new, plug and play LS1 wiring harness for a BMW E46 with an LS2 Drive by Wire engine swap. No core required. Made in USA. Ready to ship.