1980-1986 Nissan 720 Ignition Switch Guide and Part Review
Solve starting problems and electrical gremlins by learning to spot a failing ignition switch and choosing the right replacement for your truck.
- Intermittent starting or a 'click-no-start' are hallmark symptoms of a failing ignition switch on a 720.
- Replacement is a very simple DIY job, typically taking less than an hour with basic tools.
- The electrical switch is separate from the mechanical key cylinder, so you won't need new keys.
- Due to the vehicle's age and the part's simplicity, a quality aftermarket switch is a reliable and cost-effective repair solution.
Is Your Nissan 720 Ignition Switch Failing?
The ignition switch in the 1980-1986 Nissan 720 is a common wear item. Over decades of use, its internal electrical contacts can wear out, leading to a host of frustrating problems. Owners often report intermittent issues that can be hard to track down. One day the truck starts perfectly, the next it won't. This guide will help you identify the symptoms and choose a reliable new aftermarket part.
Common Failure Symptoms
- No Crank, No Start: You turn the key and get nothing but a single click, or complete silence. This is one of the most common signs 🎬 Watch: How to tell if your starter is actually the problem. the switch isn't sending power to the starter.
- Starts and Immediately Stalls: The engine fires up but dies as soon as you release the key from the 'START' to 'ON' position. This indicates the switch isn't maintaining power to the ignition or fuel system.
- Intermittent Electrical Problems: Your dashboard lights might flicker, or the radio and other accessories may cut out randomly. This can happen if the switch's contacts are loose or corroded.
- Engine Stalls While Driving: In a serious failure, the switch can lose connection while you're on the road, cutting all engine power. This is a major safety hazard.
- Key Feels 'Sloppy' or Loose: While this can also be the lock cylinder, a worn-out switch can contribute to a loose feeling when turning the key.
Important: Diagnose Before Replacing
These symptoms can also be caused by a weak battery, bad starter, or corroded fusible links. Always test your battery and check main connections before assuming the ignition switch is the only problem.
🎬 See how a pro diagnoses a tricky no-start on this truck.Choosing the Right Aftermarket Ignition Switch
For a vintage truck like the 720, new OEM parts from Nissan are rare and often expensive. Aftermarket parts are the most practical and affordable solution. The available brands offer a good balance of value and reliability for this simple, non-electronic part.
| Brand Tier | Brands | General Assessment |
|---|---|---|
| Trusted Aftermarket | Standard Ignition (SMP) | A well-known brand with a long history. They generally use quality materials and are a reliable choice for many professional mechanics. While online reviews for some of their universal parts can be mixed, their vehicle-specific switches are a solid bet. |
| Standard Aftermarket | Rostra Powertrain | Rostra is an established aftermarket manufacturer. While specific reviews for their 720 ignition switch are not readily available, they are a known quantity in the parts industry and offer a functional replacement. |
| Value Option | Replacement | This is often a generic or white-label brand that provides a cost-effective solution. For a straightforward part like the 720's ignition switch, these can perform well and solve common failure symptoms at a low cost. |
Pro Tip: Switch vs. Lock Cylinder
The ignition switch is the electrical part on the back of the steering column that the wiring plugs into. The ignition lock cylinder is the mechanical part your key slides into. They are separate components on the Nissan 720. If your key is physically stuck or broken, you may need a lock cylinder, but if you have electrical or starting issues, the switch is the likely cause.
DIY Installation Guide
Replacing the ignition switch on a 1980-1986 Nissan 720 is a simple DIY job that requires basic hand tools and about 30-60 minutes.
- Disconnect the Battery: Always disconnect the negative battery terminal first for safety.
- Remove Steering Column Covers: Remove the Phillips screws from the underside of the plastic covers around the steering column and separate the top and bottom halves.
- Locate and Unplug the Switch: The ignition switch is the round, plastic component on the back of the key cylinder housing. Unplug its electrical connector.
- Remove the Old Switch: There is one small screw holding the switch in place. Remove it, and the old switch will come right off. 🎬 Watch this quick walkthrough of the switch removal and installation.
- Install the New Switch: Seat the new switch, install the retaining screw, and plug in the electrical connector.
- Test and Reassemble: Reconnect the battery and test all key positions (ACC, ON, START) to ensure everything works correctly before putting the column covers back on.
Frequently Asked Questions
Can a bad ignition switch drain my truck's battery?
Yes. If the switch fails to completely cut power to certain circuits when the key is off, it can create a slow parasitic drain that will kill your battery over time.
Do I need a new key if I replace the ignition switch?
No. Since the ignition switch is separate from the lock cylinder, you will continue to use your original key. You only need a new key if you replace the entire lock cylinder assembly.
Are there any recalls on the Nissan 720 ignition switch?
No. While Nissan has recalled newer trucks for ignition switch issues, there are no active recalls or Technical Service Bulletins (TSBs) for the 1980-1986 Nissan 720.
Is it hard to replace the ignition switch myself?
No, this is considered an easy DIY repair. It only requires removing the steering column covers and a single screw to access the switch.
Helpful Videos
Technical Specifications
OEM Part Numbers: 48750-01B00
The ignition switch for the 1980-1986 Nissan 720 is a bolt-on electrical component located on the steering column. It typically features a round or square connector with multiple blade terminals to control the vehicle's accessory, ignition, and starter circuits. A common aftermarket part number is Standard Motor Products US-119.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Nissan 720: