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China ISUZU Quality (2 Pin) Reverse Light Switch / Backup Light Switch For ISUZU NKR NPR NQR TFR 8981809730 8980371600 8971659471 8971659470 8971376500 8971134351 8970716650 5872203130
Reverse Lamp Switch, also known as the "Backup Light Switch". For Isuzu models, this is typically denoted by the part number Isuzu 8981809730 SWITCH; REV LAM.
Description
Products Description
Component Title: Manual Transmission Reverse Lamp Switch (2-Pin)
Vehicle Applications: Isuzu Light Commercials (NKR, NPR, NQR Series & TFR Pickups)
Engine Lineup: 4JB1 (2.8L), 4KH1 (3.0L), 4HG1 (4.6L), 4JJ1 (3.0L)
Plug Specification: 2-Blade Weatherproof Connector Terminal
Interchange Numbers: 5-87220313-0, 8-97071665-0, 8-97113435-0, 8-97113435-1, 8-97137650-0, 8-97165947-0, 8-97165947-1, 8-98037160-0, 8-98180973-0 (5872203130, 8970716650, 8971134350, 8971134351, 8971376500, 8971659470, 8971659471, 8980371600, 8981809730)
Housing Metallurgy: High-Strength Zinc-Coated Steel / Brass Base & PA66 Polymer
Order Minimum (MOQ): 1 Unit (Sample trial accepted)
Country of Manufacture: China
Quality Standards: China Isuzu Qingling Standard / Heavy-Duty Commercial Aftermarket
Unit Net Weight: Approx. 0.10 kg per piece
Packaging Protocol: Sealed protective pouch + Branded box + Master export carton
Factory Warranty: 12 Months Warranty Coverage
Dispatch Timeline: 1–8 Business Days from Chongqing Central Warehouse
Logistics Channels: International Air Express (DHL/FedEx/UPS), Sea LCL/FCL, Railway Freight
Payment Options: T/T Bank Transfer, PayPal, Western Union, Trade Assurance
Products Image
For Isuzu Electrical System Recommend Parts
Reverse Light Switch (2P) Description
Threaded along the manual transmission case on Isuzu commercial trucks, this 2-blade actuator acts as the central electromechanical link between the driver's gear-shift mechanism and the truck's rear exterior safety circuits.
The instant the transmission shift fork engages reverse gear, the internal shift rail presses firmly against the switch's spring-loaded ball plunger. This mechanical motion immediately bridges the internal silver-coated contacts, sending 12V or 24V battery current to power the rear backup lamps, activate audible reverse beepers, and trigger backup camera video monitors on equipped vehicles.
Key Operational Roles:
- Instant Gear Interlocking: Converts manual shift rod movement into an immediate, low-resistance electrical pathway without signal lag.
- Rear Area Illumination: Directs full operating voltage to rear white lenses to illuminate loading docks and alert nearby pedestrians.
- Telemetry & Beeper Coordination: Serves as the primary trigger circuit for reverse obstacle sensors, safety warning sirens, and fleet camera feeds.
Why Choose Us to Buy Reverse Light Switch?
1. Precise CNC Thread Pitch & Plunger Depth: Calibrated specifically for Isuzu MSB, MYY, and MZZ manual gearboxes to ensure exact plunger engagement without binding or false triggering.
2. Heavy-Duty Silver-Alloy Contacts: High-purity silver contact points handle continuous electrical switching loads without arcing, contact carbonization, or intermittent power loss.
3. Fluororubber O-Ring Sealing Barrier: Prevents transmission oil from weeping past the mounting threads or entering the wire harness under high operating temperatures (-40°C to +125°C).
4. Dual Supply Options: We offer genuine China Isuzu Qingling assembly line units as well as heavy-duty commercial aftermarket replacements to fit diverse fleet budgets.
5. Direct Warehouse Pricing: Shipped directly from our central parts hub in Chongqing with MOQ of 1 piece, offering competitive tiered pricing for wholesale distributors.
6. Fast International Logistics: Maintained in continuous stock for rapid dispatch within 1 to 8 working days via international air express, ocean LCL/FCL, or railway lines.
Reverse Light Switch FAQs
Q1: How can I test this 2-pin switch with a digital multimeter?
A1: Set your multimeter to the continuity/resistance (Ω) setting and place the test probes across the 2 pins. In the free state, the circuit should read open (infinite resistance). When you manually press the ball plunger in, the meter should beep and display close to 0.0 Ω, confirming good electrical contact.
Q2: What is the primary cause of reverse lights remaining on in every gear?
A2: This usually occurs when the switch's internal return spring collapses or internal contacts weld shut from electrical overloads, preventing the plunger from releasing when shifted out of reverse gear.
Q3: Where is this switch mounted on Isuzu manual gearboxes?
A3: It is threaded into the upper side casing or shift-tower cover of the transmission, aligned precisely above the reverse gear shift rail detent.
Q4: Is a crush washer required during installation?
A4: Yes, always install the supplied metal crush washer under the hex base shoulder. This ensures correct thread depth into the gearbox and creates an oil-tight seal against high-pressure transmission splash.
Q5: How do I confirm compatibility with my specific truck?
A5: Provide your truck chassis series (NKR55, NPR71, NQR75, TFR54), engine code (4JB1, 4KH1), or the OE part number from your original switch. Our technical team will verify the thread pitch and connector pinout prior to dispatch.
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