bmw e46 wiring harness | eBay Find great deals on eBay for bmw e46 wiring harness. Shop with confidence. Skip to main content. eBay Logo: BMW OEM E46 MAIN ENGINE WIRING HARNESS M52 323 328 SEDAN COUPE UNCUT WIRES See more like this. Bmw M54 M52TU S54 S62 M62 M62TU in E30 E36 Engine Harness Wiring Adapter E39 E46. 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.