Multiquip 46172 Engine Harness Assembly - OEM Replacement Part for Screeds

This engine harness assembly provides critical electrical connectivity between the igniter system, electronic governor, engine speed sensor, and power relay on roller screed power units. Designed specifically for diesel-powered screeds, this harness manages 12V power input, auxiliary circuits, and MPU sensor signals that control engine speed and ignition timing through the electronic governor system.

The harness integrates multiple circuits including IG1, IG2, and IG3 igniter lines, a 5.5A AVX relay driver with 12-pin connector, and dedicated wiring for the engine speed sensor (MPU+ and MPU-). It also handles the 5V reference voltage and ground connections required for proper governor operation. This is a maintenance-critical component—damaged or corroded wiring can cause rough engine operation, failure to start, or complete electrical system malfunction. During troubleshooting, always check this harness for loose connections, damaged insulation, or corrosion at connector points before replacing major components.

Compatible with the following Multiquip screed models:

• WRS5200

Genuine Multiquip OEM part, sold by an authorized dealer.