Volvo B230 ECU Master Black Engine Wiring Harness Pre-assembled wiring loom for Volvo B230 engines, designed for direct compatibility with the ECU Master EMU Black. This plug-and-play harness is the perfect solution when installing an ECU Master EMU Black engine management system in your Volvo 240, 740, 940, or any custom build equipped with a B230 engine. Hand-built and professionally assembled by a motorsport wiring specialist in the EU. See the detailed connector description below for full compatibility information. Cockpit side connectors ECU Master Black 39 39-pin Delphi, FCI, Sicma ECU Master Black 24 24-pin Delphi, FCI, Sicma Power connector 12-pin Delphi GT150 Engine bay side connectors INJ 1-4 2-pin JPT Lambda 6-pin VAG (LSU 4.2) Crank 3-pin JPT Coil 6-pin Superseal / 4-pin VAG Oil pressure 3-pin OEM connector Boost 2-pin Superseal (MAC solenoid) Cam 3-pin JPT GND 10mm ring terminal TPS 3-pin JPT Idle 3-pin JPT IAT 2-pin JPT CLT 2-pin JPT Knock 2-pin JPT