Dimension fuse on Nissan Sunny: location, numbers and replacement

Nissan Sunny (especially models B13, B14 and B15) is one of the most common Japanese sedans on the secondary market. But even such reliable cars eventually develop electrical problems. One of the common malfunctions is side light fuse blown. If your lights do not light up on one or both sides, do not rush to change the lamps or check the wiring. In 80% of cases the fuse is to blame.

In this article you will find exact fuse locations for different generations Sunny, fuse numbers for dimensions, step-by-step replacement instructions and typical mistakes that owners make. We will also look at how to distinguish a blown fuse from problems with the relay or wiring, and give tips for prevention.

Where is the headroom fuse on a Nissan Sunny?

B Nissan Sunny The side light fuses are located in main fuse box, which is located in the cabin under the dashboard on the driver's side. The exact location depends on the generation:

• 🔧 Sunny B13 (1990–1995) — the fuse box is hidden under a plastic cover to the left of the steering column. The lid is secured with two latches.
• 🔧 Sunny B14 (1995–1999) — the block has been moved a little to the right, closer to the center console. Black lid with inscription FUSE.
• 🔧 Sunny B15 (1999–2006) — the fuse box is located under the glove compartment, access to it is gained after removing the plastic panel.

On all generations Sunny The size fuse is marked as TAIL or TAIL LAMP (sometimes PARKING LAMP). Its denomination is 10A or 15A (depending on the year of manufacture and configuration). On models with fog lights, the headlight fuse can be duplicated in an additional block under the hood (marked as FOG & TAIL).

Fuse numbers and diagrams by generation

To avoid confusing the size fuse with others, use the table below. Please note that on some modifications (for example, with diesel engine or automatic transmission) location may vary slightly.

Generation	Fuse number	Denomination (A)	Additional information
Sunny B13	F10 or F12	10	Also responsible for the dashboard lighting
Sunny B14	F7	15	On models with climate control may be duplicated F18
Sunny B15	F14	10	On restyled versions (2002+) the fuse is moved to F16
Sunny N16/N17 (European version)	F20	15	Fuse box under the hood, next to the battery

If the oversize fuse on your machine is not in the indicated locations, check additional fuse box under the hood (next to the battery or on the left mudguard). On some export versions Sunny it can be designated as LIGHTING.

How to check a fuse without a tester?

If you don't have a multimeter at hand, you can visually inspect the fuse in the light. A blown fuse will have a broken metal thread inside. You can also replace a suspicious fuse with a known good fuse of the same rating (for example, from a cigarette lighter fuse).

Step-by-step instructions for replacing the fuse

Replacing the size fuse with Nissan Sunny takes no more than 5 minutes, but it is important to do it correctly so as not to damage the electrician. Follow the instructions:

1. Turn off the ignition and remove the key from the lock. This will prevent short circuits when replacing.
2. Remove the fuse box cover. On Sunny B13/B14 it is fixed with latches on B15 - a Phillips head screwdriver.
3. Find the size fuse according to the scheme (see table above). It is usually designated as TAIL.
4. Remove the fuse tweezers (available in the block) or pliers. Don't pull the wires!
5. Check its condition. If the thread inside is broken, the fuse has blown.
6. Install a new fuse the same denomination. Never use a fuse with a large amperage!
7. Check the dimensionsby turning them on without starting the engine.

If the fuse blows again after replacement, this indicates short circuit in the dimensions circuit. In this case, you need to check the wiring, lamps and connectors. Most often the problem lies in oxidized contacts of lamp sockets or frayed wire insulation in the rear lights.

Typical mistakes when replacing a fuse

Many owners Nissan Sunny make mistakes that lead to repeated fuse blowing or even electrical damage. Here are the most common:

• ⚡ Using the wrong fuse rating. For example, setting 20A instead of 10A may cause wiring to melt.
• ⚡ Replacing the fuse without turning off the ignition. This is fraught with a short circuit, especially if the block has oxidized contacts.
• ⚡ Ignoring the cause of burnout. If the fuse burns out repeatedly, you need to check lamps, sockets and wiring, and not just install a new one.
• ⚡ Fuse confusion. For example, on Sunny B14 size fuse (F7) is often confused with the brake light fuse (F8).

⚠️ Attention: If, when replacing a fuse, you notice melted contacts in the block or a burning smell, immediately disconnect the battery and contact an auto electrician. This is a sign of a serious short circuit that may cause a fire.

Another common mistake is checking the fuse by eye without a tester. Sometimes the thread inside the fuse remains intact, but the contact is broken due to oxidation. In this case, the fuse will appear to be good, but no current will flow through it. Always test the fuse with a multimeter in continuity mode.

How to check the size circuit if the fuse is good

If the fuse is intact, but the dimensions do not work, the problem may lie in:

• 💡 Lampah - burned out or poor contact in the cartridge.
• 🔌 Dimensions relay - on Sunny B14/B15 it is located in the same block as the fuses (marked TAIL RELAY).
• 🔋 Wiring - open circuit or short circuit in the circuit.
• 📟 Dimensions switch — oxidized contacts or mechanical wear.

For diagnostics:

1. Check size lamps (front and rear). On Sunny B13 they often burn out in pairs.
2. Call wires from the fuse box to the headlights with a multimeter. The resistance should be close to 0 ohm.
3. Check size relay. To do this, you can temporarily install a known-good relay (for example, from turn signals).
4. If all else fails, remove it size switch handle and check the contacts on the steering column switch.

Prevention: how to avoid frequent fuses blowing

To ensure that the size fuse is on Nissan Sunny lasted longer, follow these tips:

• 🔦 Clean your contacts regularly in lamp sockets. Oxidation increases resistance and causes the circuit to overheat.
• 💡 Use quality lamps. Cheap Chinese lamps often have the wrong resistance, which leads to overload.
• 🔌 Check the tightness of the headlights. Moisture inside the headlight will corrode the contacts and may cause a short circuit.
• 🔧 Do not load the clearance chain additional consumers (for example, LED strips without relays).

Also recommended check the condition of the fuse box once a year. Over time, the contacts in it oxidize, which leads to poor conductivity and overheating of the fuses. To clean, use special spray for contacts (For example, CRC Contact Cleaner).

⚠️ Attention: If you install LED lamps in dimensions, be sure to use load resistors or stabilization blocks. Without them, the fuse will be overloaded due to the low resistance of the LED lamps.

Frequently asked questions (FAQ)

Is it possible to drive without a side-by-side fuse?

No, it's dangerous. Without a fuse, any short circuit in the dimensional circuit can lead to melted wiring or even a fire. If a fuse blows too often, find and correct the cause rather than operating the machine without it.

Why does the size fuse blow on only one side?

This indicates local short circuit in the circuit of a particular headlight. Most often the problem is:

• Oxidized lamp socket.
• Frayed wire inside the headlight.
• Short to ground due to corrosion in the rear light.

Check the circuit with a multimeter by disconnecting the connector of the problematic headlight.

Which fuse is responsible for the license plate light on the Sunny B14?

License plate light on Sunny B14 usually connected to the same fuse as the dimensions (F7, 15A). If the backlight does not work and the lights are on, check:

• Lamps in the backlight (they often burn out).
• Wiring from the fuse box to the ceiling lamp (often frayed in the trunk).

Is it possible to replace the size fuse with a bug?

Absolutely not. A “bug” (a piece of wire instead of a fuse) can withstand a current tens of times higher than the rated current, which will lead to:

• Melting of wiring.
• Fuse box failure.
• Fire in the cabin.

If you don't have the correct fuse, temporarily use a fuse of the same rating from another circuit (such as the cigarette lighter), but install a new one as soon as possible.

Where to buy a fuse for dimensions for Nissan Sunny?

Fuses of standard ratings (10A And 15A) are sold:

• In any auto store (cost: 10–50 rubles).
• At gas stations (usually in sets of 5–10 pieces).
• In online stores (for example, Exist.ru, Autodoc).

For Sunny suitable type fuses ATO/ATC (standard knife). When purchasing, check that the denomination matches the required one (see table above).