The Genie 100780GT is a genuine OEM Down Limit Switch Wire Assembly designed for Genie QuickStock mast lifts and Runabout vertical mast lifts. Sourced directly from Genie, this assembly delivers the correct connector configuration and wire gauge to integrate seamlessly with the down limit switch circuit on compatible units. It is verified to fit the QS-12R, QS-15R, QS-20R, QS-12W, QS-15W, QS-20W, GR-12, GR-15, and GR-20. When the original wiring degrades, chafes, or loses continuity, replacing it with this genuine assembly restores proper switch signaling and keeps the control system operating as designed.
Key Features
- OEM Electrical Integrity — Manufactured to Genie's original wire gauge, insulation grade, and connector specification, ensuring the down limit switch circuit reads accurately without signal loss or resistance mismatch.
- Direct-Connect Replacement — Terminals and connectors match the original harness routing on QS and GR series units, allowing a straightforward swap without splicing or adapting ends.
- Broad QS and GR Series Coverage — Fits the full QuickStock line (QS-12R, QS-15R, QS-20R, QS-12W, QS-15W, QS-20W) and Runabout vertical mast lifts (GR-12, GR-15, GR-20) in a single part number.
- Restored Descent Control Signaling — A functioning down limit switch circuit is essential for accurate mast position detection; a worn or broken wire assembly can cause erratic lowering behavior or prevent the mast from descending to its travel position.
- Safety-Critical Wiring — The down limit switch protects the mast from over-travel at the lower end of its range. Maintaining the integrity of this wiring is directly tied to safe, controlled mast operation on both stock-picking and personnel lift applications.
The down limit switch wire assembly connects the down limit switch to the machine's control circuit, transmitting the signal that tells the controller when the mast platform has reached its lowest travel position. Without a reliable connection, the controller cannot accurately detect mast position, which can result in unexpected behavior during lowering or prevent the unit from functioning within its designed travel limits. Over time, the original wiring can suffer from abrasion, connector corrosion, or fatigue-related breaks — conditions that make replacement with a correctly specified assembly the surest path to restoring full control system function.
Part Details
| Part Number | 100780GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Down Limit Switch Wire Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| QS-12R | QS-12R |
| QS-15R | QS-15R |
| QS-20R | QS-20R |
| QS-12W | QS-12W |
| QS-15W | QS-15W |
| QS-20W | QS-20W |
| GR-12 | GR-12 |
| GR-15 | GR-15 |
| GR-20 | GR-20 |
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.
