The Wacker Neuson is a genuine OEM A.C. Wiring Harness designed for the GP3800A, GP5600A, GP6600A, GPS5600A, and GP4000A portable generator series. As a factory-sourced component, it meets the exact electrical specifications Wacker Neuson engineered into these units, ensuring correct connector fit, conductor sizing, and insulation grade. This harness covers both EPA-compliant and standard configurations across the GP and GPS generator families. If your generator is showing intermittent power output, tripped breakers, or dead outlets, the A.C. wiring harness is a primary diagnostic component to inspect and replace.
Key Features
- Correct Conductor and Connector Spec — Manufactured to the original electrical ratings for A.C. output circuits in Wacker Neuson GP and GPS series generators, ensuring proper load handling and connector seating.
- Genuine OEM Sourcing — Part number 5200003812 is a factory-original component, not an approximation — wiring gauge, terminal type, and harness routing are identical to what left the production line.
- Broad GP/GPS Generator Compatibility — Fits GP3800A, GP5600A, GP6600A, GPS5600A, and GP4000A models, including EPA-compliant and wheel-kit variants across multiple configurations.
- Restores Full A.C. Output Function — A damaged or degraded A.C. harness causes lost outlet voltage, breaker faults, or uneven load distribution; replacing it with the correct harness restores stable power delivery to connected equipment.
- Electrical Safety Compliance — Using the correctly rated OEM harness maintains the integrity of the generator's A.C. circuit, reducing the risk of overheating, arcing, or insulation failure under load.
The A.C. wiring harness is the backbone of a portable generator's output circuit, routing alternating current from the alternator windings through to the panel outlets and circuit breakers. It carries every amp of usable power the generator produces, so any degradation — whether from heat, vibration, moisture ingress, or rodent damage — directly affects output reliability and can create unsafe operating conditions. Replacing a worn or damaged harness with the correct OEM part restores the full electrical pathway and ensures the generator performs to its rated output capacity.
Part Details
| Part Number | 5200003812 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | A.C. Wiring Harness |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Portable Generator | GPS5600A | 5000620981 |
| GPS6600A Generator, EPA | GPS6600 | 5000620987 |
| GP3800A Generator, EPA w/Wheel Kit | GP3800 | 5000620976, 5000620974 |
| GP5600A Generator, EPA w/Wheel Kit | GP5600 | 5000620983 |
| GP6600A Generator, EPA w/Wheel Kit | GP6600 | 5000620989, 5000620985 |
| GP5600A Generator, EPA | GP5600A | 5000620979 |
| Portable Generator | GP4000 | 5000620977 |
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.
