The Wacker Neuson Engine Wiring Harness is a genuine OEM component designed for the RD12A-90 tandem roller series and CRT36-26A and CRTv36-26A power trowel series. Sourced directly from Wacker Neuson, this harness meets the exact electrical specifications of the original part — ensuring every circuit, connector, and conductor matches what the engine management system expects. Whether you're servicing a double drum roller or a ride-on trowel, the is the confirmed OEM replacement for these machines.
Key Features
- OEM-Spec Conductor and Connector Layout — Each wire gauge, terminal type, and connector housing matches the original Wacker Neuson design, ensuring correct resistance and signal integrity throughout the engine electrical circuit.
- Direct Plug-In Replacement — Connectors align with factory harness routing points on covered models, so the harness seats and locks without splicing or adapter work.
- Broad Model Coverage — Fits RD12A-90 double drum rollers (including foldable ROPS variants) and CRT36-26A / CRTv36-26A power trowels, including wheel kit-equipped configurations.
- Engine System Integrity — A correctly functioning engine wiring harness keeps ignition, throttle, and shutdown signals clean and uninterrupted. A damaged or corroded harness causes erratic engine behavior, hard starts, or unexpected shutdowns mid-operation.
- Electrical Safety Compliance — As a core engine electrical component, using the genuine OEM harness ensures proper grounding paths and insulation ratings are maintained — critical for safe machine operation and compliance with equipment safety standards.
The engine wiring harness is the central electrical backbone connecting the engine's sensors, controls, and safety circuits to the machine's operating system. It carries signals for ignition, throttle control, oil pressure monitoring, and emergency shutdown — meaning any break, short, or corroded connection in the harness can cause the engine to run erratically, fail to start, or shut down unexpectedly under load. Replacing a worn or damaged harness with the correct OEM part restores full communication between engine components and ensures the machine responds predictably and safely during operation.
Part Details
| Part Number | 5000226512 |
|---|---|
| Old Part Number | 0226512 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Engine Wiring Harness |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD12A-90 ROLLER,DBL DRUM,GRN | RD12A-90 | 5000620369, 5000620058, 5000620320 |
| CRT36-26A Trowel w/Wheel Kit | CRT36-26A | 5000621000, 5000620999, 5000621001, 5000621002 |
| CRTv 36-26A Trowel, w/Wheel Kit | CRTv36-26A | 5200008544, 5200008545, 5200008546 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
