OEM 3746930LD060 Window Regulator Switch 12V Left Door Window Lifter Switch for JAC 1040S 1042 D300 N721
| Voltage: | 12V | Position: | Left Door / Driver Side |
| OEM Part Number: | 3746930LD060 | Material: | High-strength Aluminum Alloy & Precision Bearings |
| Condition: | Brand New — OEM / Aftermarket | Connector Pinout: | Pending — Not Specified |
| High Light: | Left Door Window Regulator Switch,12V Window Lifter Switch,OEM 3746930LD060 Power Window Switch |
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The OEM Left Door Window Regulator Switch 3746930LD060 is a 12V direct-fit replacement window control switch designed for JAC 1040S, 1042, D300, and N721 light trucks. This driver-side lifter switch operates the electric window regulator, allowing the driver to raise and lower the window with reliable, OEM-equivalent performance.
Working Principle: The window switch contains electrical contacts that reverse the polarity of current sent to the window motor. Pressing the switch up or down completes a circuit that drives the motor in the corresponding direction, moving the window glass via the regulator mechanism. A failed switch causes the window to stop operating, move intermittently, or become stuck.
- Confirmed OEM Number: 3746930LD060 — confirmed across multiple independent suppliers
- Confirmed Part Name: Window Regulator Switch / Window Lifter Switch — confirmed in English, Russian, and Japanese listings
- Confirmed Vehicle Compatibility: JAC 1040S, 1042, D300, N721 — confirmed by Yuchung Power; JAC N56 also listed by multiple Russian suppliers
- Confirmed Voltage: 12V — confirmed by Turkish supplier listing
- Confirmed Position: Left door / Driver side — confirmed by Russian suppliers ("левой двери")
- Confirmed Warranty: 3 months (IZUMI listing) / 6 months (Leading listing)
- Confirmed Delivery: 15–20 days (IZUMI listing)
- Pending Dimensions, weight, connector pinout, contact resistance, durability cycles — not specified in available sources
- Window does not move when switch is pressed
- Window moves intermittently or stops midway
- Window operates in one direction only
- Switch feels loose or has excessive play
- Burning smell or visible damage at switch connector
| Part Number | 3746930LD060 | Product Name | Window Regulator Switch |
|---|---|---|---|
| Car Model | JAC 1040S 1042 D300 N721 | Engine Model | JAC 1040S 1042 D300 N721 |
| Condition | 100% Brand New | Size | — |
| Weight | Standard | Origin | China Mainland |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe | Package | Neutral Packing Or Make It As Requested |
| Warranty | 6 Months | Price & Stock | Please Contact Us To Get More Information |
| Material | High-strength aluminum alloy & precision bearings | Cooling Type | Engine coolant circulation |
| Installation | Direct OEM replacement | Quality Standard | OEM equivalent / ISO quality control |
| Feature | Benefit + Verification Signal |
|---|---|
| OEM-matched fitment | Direct replacement for failed original switch — OEM number confirmed across multiple suppliers |
| 12V operation | Matches standard JAC light truck electrical system — voltage confirmed |
| Left door specific | Correct fitment for driver-side window control — position confirmed by Russian suppliers |
| Multiple aftermarket options | Available from IZUMI and other suppliers with 3–6 month warranty |
| QC Item | Verification Method |
|---|---|
| Contact resistance | Multimeter measurement across switch terminals Spec pending |
| Switch actuation | Manual operation check for tactile feedback Spec pending |
| Connector integrity | Visual + continuity test Spec pending |
| Housing durability | Visual inspection for cracks or UV damage Spec pending |
- Disconnect battery negative terminal.
- Remove door trim panel and any components blocking switch access.
- Disconnect electrical connector from switch.
- Remove switch retaining screws or release clips. Extract old switch.
- Install new switch. Secure with screws/clips.
- Reconnect electrical connector. Ensure clean, tight connection.
- Reconnect battery. Test window operation in both directions.
The window switch is not a routine maintenance item. Inspect for smooth operation at every service. Replace when window operation becomes intermittent, stuck, or unresponsive.
- Neutral box / color box / custom brand packaging
- Suitable for: Wholesale distributors, electrical repair workshops, JAC parts suppliers
- MOQ: Small orders accepted (IZUMI)
- Delivery: 15–20 days after payment (IZUMI)
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