The Wacker Neuson Digital Voltage Regulator is a genuine OEM component designed for LTW20Z-3 Light Towers and HI1000DGM Indirect Air Heaters. Sourced directly from Wacker Neuson, this is an exact-match replacement that slots into your machine the way the original did — no guesswork, no adaptation. Fitment extends across multiple LTW20Z-3 and LTW20Z3-V Light Tower configurations, including cold weather and custom Tier 4i builds, as well as HI1000DGM and HI1000 Indirect Air Heater variants. When your electrical output starts fluctuating or the original regulator fails, is the correct part to restore stable power generation.
Key Features
- OEM-Calibrated Output Regulation — Manufactured to Wacker Neuson's exact voltage tolerance specs, ensuring the digital regulator holds output within the precise range your generator head requires.
- Direct Plug-In Replacement — Matches the original mounting configuration and electrical connector on LTW20Z-3 and HI1000DGM machines, allowing a straightforward swap without rewiring or bracket modification.
- Broad Fitment Across Light Tower and Heater Lines — Compatible with LTW20Z-3 and LTW20Z3-V Light Tower series (including Tier 4i, cold weather, and custom builds) and HI1000DGM and HI1000 Indirect Air Heater models.
- Stable Power for Connected Equipment — A functioning digital voltage regulator keeps generator output steady under variable load, protecting lights, controls, and any site equipment drawing power from the machine.
- Electrical Safety Compliance — As a critical generator control component, using the correct OEM part helps maintain safe operating voltage and protects downstream electrical systems from damaging voltage spikes or drops.
- Genuine Wacker Neuson Part — Part number 5000186900 is an authentic OEM component backed by Wacker Neuson's parts program, giving you confidence that quality and compatibility are verified from the source.
A digital voltage regulator controls the electrical output of a generator by automatically adjusting the excitation current supplied to the alternator field winding, keeping output voltage stable regardless of changes in load or engine speed. On light towers and indirect air heaters like the LTW20Z-3 and HI1000DGM, consistent voltage is essential — connected lighting arrays, electronic controls, and safety systems all depend on clean, stable power to operate correctly. When the voltage regulator fails, symptoms typically include flickering or dimming lights, erratic output readings, or complete loss of generator output, making prompt replacement critical to getting the machine back into service.
Part Details
| Part Number | 5000186900 |
|---|---|
| Old Part Number | 0186900 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Digital Voltage Regulator |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| LTW20Z-3, LIGHT TOWER 60HZ, ISUZU TIER 4i | LTW20Z3 | 5000620376, 5000620843, 5200003583, 5200004097, 5200023192 |
| Light Tower | LTW20Z3-V | 5200012881, 5200012885, 5200012867, 5200022694 |
| HI1000 Indirect Air Heater, DGM, Electric Break | HI1000DGM | 5200011234, 5200011235, 5100049275, 5100049276 |
| HI1000 | HI1000 | 5100049274 |
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.
