The Wacker Neuson Wiring Harness is a genuine OEM component designed for the E1250 and HSH380 series hydronic surface heaters. As a direct factory replacement, this harness restores proper electrical connectivity across the heater's control and operating circuits — matching the original routing, connector types, and conductor specifications exactly. It is confirmed to fit the E1250S, E1250B, and E1250P models across LP/NG, Diesel, Standard, Basic, and Premium configurations, as well as HSH380S and HSH380B units in both generator-equipped and standalone variants. When electrical faults or damaged wiring compromise heater performance, installing the correct OEM harness ensures the system returns to reliable, spec-compliant operation.
Key Features
- OEM Conductor and Connector Integrity — Manufactured to Wacker Neuson's original harness specification, with matched wire gauges and factory-grade connectors that maintain correct voltage and signal delivery throughout the heater's control system.
- Drop-In Electrical Replacement — Replicates the original harness routing and termination points exactly, allowing direct installation without splicing, adapting, or rerouting existing circuits.
- Broad E1250 and HSH380 Series Coverage — Fits E1250S, E1250B, and E1250P models in LP/NG and Diesel configurations, plus HSH380S and HSH380B units with and without an onboard generator.
- Restores Full Heater Control Function — A damaged or degraded wiring harness can cause erratic operation, failed ignition sequences, or complete loss of heater function; replacing it with part 5200014427 brings all control circuits back to proper working order.
- Electrical Safety Assurance — In fuel-burning heating equipment, a compromised harness can create shorts or misfires in safety-critical circuits. Using the genuine OEM harness maintains the electrical integrity the heater's safety controls depend on.
The wiring harness is the central electrical backbone of the hydronic surface heater, routing power and control signals between the burner assembly, thermostat, pump, and operator controls. Without a fully intact harness, the heater cannot reliably start, regulate temperature, or respond to safety shutoffs. Over time, exposure to heat cycling, moisture, and mechanical stress can cause insulation cracking, connector corrosion, or broken conductors — any of which can result in intermittent faults or complete system failure. Replacing a worn or damaged harness with the correct OEM part is the most direct way to restore predictable, safe heater operation.
Part Details
| Part Number | 5200014427 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Wiring Harness |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| E12540B | E1250B | 5200012353, 5200007613 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359, 5200007614 |
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.
