The Bomag 78100118 Earth Ground Wire is a genuine OEM component designed for Bomag tandem rollers, including the BW 138 AD, BW 135 AD, BW 135 AC, BW 138 AC, BW 138-AD, BW 120 AD-3, BW 120 AC-3, BW 120 AD-3, BW 125 ACH, BW 125 ADH, BW 100 AC-3, and BW 100 AD-3. Sourced directly from Bomag, this earth ground wire is manufactured to the exact specification of the original part it replaces, ensuring a correct, trouble-free installation. Confirm your model against the fitment list and order part number 78100118 with confidence.
Key Features
- Genuine OEM Electrical Integrity — manufactured by Bomag to match the original wire gauge, insulation rating, and connector specification of the factory earth ground wire, ensuring stable grounding continuity across the electrical system
- Direct Drop-In Replacement — matches the original routing, length, and terminal configuration so this earth ground wire installs into your tandem roller's chassis ground circuit without modification
- Broad Tandem Roller Coverage — fits a wide range of Bomag tandem rollers, including BW 100 AC-3, BW 100 AD-3, BW 120 AC-3, BW 120 AD-3, BW 125 ACH, BW 125 ADH, BW 135 AC, BW 135 AD, BW 138 AC, BW 138 AD, and BW 138-AD models
- Protects Sensitive On-Board Electronics — a sound earth ground path prevents voltage fluctuations and electromagnetic interference that can damage control modules, sensors, and other electrical components on the roller
- Electrical Safety Assurance — a properly grounded machine reduces the risk of stray current, unexpected component behavior, and electrical faults that can create unsafe operating conditions for the operator
The earth ground wire provides the low-resistance return path that completes every electrical circuit on the machine, connecting the chassis, engine block, and electrical components back to the negative terminal of the battery. Without a solid ground connection, current cannot flow correctly, leading to erratic sensor readings, intermittent starting faults, flickering instrumentation, and potential damage to control units. When the ground wire corrodes, breaks, or loses its terminal contact, these symptoms can appear suddenly and are often misdiagnosed — replacing the earth ground wire with a genuine Bomag part restores the baseline electrical health the machine depends on.
Part Details
| Part Number | 78100118 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Earth Ground Wire |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 138 AD | 00810105, 00810191, 00817473, 00818359 |
| Tandem Roller | BW 135 AD | 00810120, 00817471, 00818357 |
| Tandem Roller | BW 100 AC-3 | 00817457 |
| Tandem Roller | BW 100 AD-3 | 00817458 |
| Tandem Roller | BW 120 AC-3 | 00817462 |
| Tandem Roller | BW 120 AD-3 | 00817463, 00817831, 00817833 |
| Tandem Roller | BW 125 ACH | 00817466 |
| Tandem Roller | BW 125 ADH | 00817467 |
| Tandem Roller | BW 135 AC | 00817470 |
| Tandem Roller | BW 138 AC | 00817472, 00818361 |
| Tandem Roller | BW120AD 3 | 00817571 |
| Tandem Roller | BW 138-AD | 00817572, 00818389 |
| Tandem Roller | BW120 AD-3 | 00817849 |
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.
