Nissan Sunny is a legendary car that is still popular today due to its reliability and ease of maintenance. However, when replacing or repairing an audio system, owners often face a problem: where to find the exact radio pinout for a specific generation? Standard connectors Sunny (especially models B13, B14 And B15) have unique features, and the documentation has long been out of print.

In this article we will analyze in detail wire colors, the purpose of each contact, the nuances of connecting non-standard radios and typical errors that can damage the audio system. You will learn how to correctly identify the connector, where to look for power and speakers, and how to adapt modern multimedia to old electrics. Nissan. The material is relevant for all modifications Sunny, including export versions with non-standard connectors.

Generations of Nissan Sunny and their connectors: what is the difference between B13, B14 and B15

Models Nissan Sunny were produced from 1986 to 2006, and during this time the radio connection diagram has undergone changes. The main differences concern connector type and contact distribution:

  • 🔹 B13 (1986–1990): Uses 16-pin connector with non-standard pinout. Power and speakers are often combined into one unit, making it difficult to connect non-standard devices.
  • 🔹 B14 (1990–1995): Go to 20-pin connector with division into power supplies and audio. Support now available CD changer and additional amplifiers.
  • 🔹 B15 (1995–2006): Unified ISO connector (partially), but maintaining branded contacts for Nissan. In some configurations there are CAN buses for control from the steering wheel.

Important: even within the same generation, pinouts may differ depending on the region of delivery. For example, European Sunny often have additional contacts for antenna amplifier, which are not in the Japanese versions. Before starting work, be sure to check with VIN code car - this will help to more accurately determine the diagram.

📊 What generation of Nissan Sunny do you have?
  • B13 (1986–1990)
  • B14 (1990–1995)
  • B15 (1995–2006)
  • I don't know the generation

Standard pinout of Nissan Sunny B14 radio: analysis of contacts

The most common model is B14 — equipped with a 20-pin connector, where the contacts are divided into three groups: food, speakers And management. Below is a typical diagram for the basic configuration:

Contact number Wire color Purpose Notes
1 Yellow BAT+ (constant +12V) Connects to battery via fuse
2 Red ACC+ (ignition) Activated when turning the key
7 Black GND (mass) General minus for power and audio
10 Green Right front speaker (+) Polarity is important for phasing
11 Green/black Right front speaker (–) Often confused with rear speaker

Critical feature: in Nissan Sunny B14 pin No. 5 (blue wire) is responsible for controlling the antenna, but in some versions it may be soldered or absent. If, after connecting the radio, the antenna does not extend, check the presence of this wire and the supply of + 12V to it when the radio is turned on.

⚠️ Attention: Don't connect BAT+ (yellow wire) directly to the battery without a fuse! In standard wiring Sunny fuse is often used 10Alocated in the block under the hood (position F17). Excessive current may damage the audio system or cause a fire.

Speaker pinout: how not to confuse polarity and power

Errors when connecting speakers are one of the main reasons for poor sound or equipment failure. B Nissan Sunny are used 4 speakers (one for each door), but in top trim levels there may be additional tweeters or a subwoofer.Standard

Color coding of speaker wires in B14/B15:

  • 🔊 Front left (+): White
  • 🔊 Front left (–): White/black
  • 🔊 Front right (+): Green
  • 🔊 Front right (–): Green/black
  • 🔊 Rear left (+): Gray
  • 🔊 Rear left (–): Grey/black
  • 🔊 Rear right (+): Purple
  • 🔊 Rear right (–): Purple/black

Speaker impedance in Sunny usually amounts to 4 ohm, but in systems with an amplifier (for example, Bose) may occur 2 ohm. Connecting a non-standard radio with a 4 ohm output to such speakers will lead to sound distortion or amplifier overheating.

Test the wires with a multimeter for a break|Check the polarity (+/–) according to the color scheme|Check the speaker resistance (should be 4 ohms)|Disconnect the battery before soldering-->

Connecting a non-standard radio: adapters and adapters

Replacing the standard radio with a modern one (for example, Pioneer or Sony) requires use adapter. For Nissan Sunny B14/B15 The following adapters are suitable:

  • 🔌 ISO → Nissan 20-pin: Standard adapter for most aftermarket radios. Cost - from 500 rubles.
  • 🔌 Metra 70-7551: Universal adapter for Nissan with support CAN buses (needed to maintain steering control).
  • 🔌 Connects2 CT23NI02: Premium with support Bluetooth And USB.

When connecting via an adapter, pay attention to the following nuances:

  1. If the radio does not turn on, check ACC+ (red wire) - it should receive +12V only when the ignition is on.
  2. For work Bluetooth or Android Auto may require additional connection to CAN bus (orange/green wires in connector).
  3. Some adapters do not have a pin for antenna amplifier — it will have to be connected separately.
What to do if the radio does not see the USB or SD card?

The problem is often related to insufficient voltage on the USB port. B Nissan Sunny Standard wiring does not always provide the required current. Solution:

1. Connect a USB hub with external power.

2. Check the voltage at USB+5V (must be at least 4.8V).

3. Replace the standard cable with a thicker one (cross-section no less than 0.75 mm²).

Common connection mistakes and how to avoid them

Even experienced auto electricians make mistakes when working with an audio system. Sunny. Here are the most common ones:

  1. Reversed speaker polarity: Will result in an "out-of-phase" sound (bass is lost, high frequencies are distorted). Check the polarity with a multimeter in continuity mode.
  2. No fuse on BAT+: May cause short circuit and fire. Always install the fuse on 10–15A next to the battery.
  3. Ignoring ILL+ (backlight): If you do not connect the orange wire to the dimensions, the radio will not synchronize with the panel backlight.
  4. Incorrect grounding: The mass must be attached to pure metal body, and not to the plastic elements of the interior.
⚠️ Attention: B Nissan Sunny B15 with the system Bose You cannot connect a non-standard radio directly to the standard speakers! Amplifier Bose has its own control circuit, and direct connection will lead to its failure. Use bypass amplifier (For example, LC2i from Audison).
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If, after connecting, the radio turns off by itself after 5–10 seconds, check the voltage at ACC+. Perhaps the contact is oxidized or the wires are not crimped tightly enough in the connector.

Where to find the original wiring diagram for your Sunny

If your radio has a non-standard pinout or you are not sure about the wire colors, the best way is to find original diagram for your VIN. Here's where to look for it:

  • 📄 Repair manual: For Nissan Sunny B13/B14 a manual will do FSM (Factory Service Manual). It can be found at eBay or specialized forums (for example, NissanClub.ru).
  • 🔍 VIN databases: Services like AutoData or Mitchell1 Provide diagrams by body number (for a fee).
  • 📌 Owner forums: On Drive2.ru And Nissan-Forums.com They often post scans of diagrams for specific years of manufacture.

If you cannot find the diagram, you can use multimeter for checking wires:

  1. Disconnect the battery.
  2. Turn on the ignition (check ACC+ - should be +12V).
  3. Ring the speakers: the resistance between “+” and “–” should be 4–8 ohms.
  4. Check the antenna power: when you turn on the radio, +12V should appear on the blue wire.
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The most reliable way to determine the pinout is to test the wires with a multimeter in voltage (for power supply) and resistance (for speakers) mode. Don't rely on color coding alone!

FAQ: Frequently asked questions about the pinout of the Nissan Sunny radio

Is it possible to connect a radio from Nissan Almera to Sunny B14?

Yes, but with reservations. Connectors Almera N15 And Sunny B14 are partially compatible, but speaker pinouts may differ (for example, the rear left speaker in Almera often connected to the gray/black wire, and in Sunny - to gray). Before connecting, check the diagram or test the wires.

Why don't the buttons on the steering wheel work after connecting a new radio?

Steering wheel control Sunny B15 implemented through CAN bus. To maintain functionality, an adapter is required (for example, Metra AX-NIS2 or Connects2 CTNI001). Without it, signals from the buttons will not be transmitted to the radio.

Which fuse is responsible for the radio in the Nissan Sunny B13?

B B13 The audio system fuse is located in the fuse box under the hood (position F17, denomination 10A). In some versions it can be duplicated by a fuse in the passenger compartment (under the panel on the driver's side).

Is it possible to connect a subwoofer to the standard Sunny radio?

Yes, but it will be required amplifier output (usually these are RCA connectors). In standard radios Sunny There is no such option, so you have to:

  1. Use linear converter (For example, LC2i) connected to the rear speakers.
  2. Replace the radio with a model with RCA outputs.

Connecting the subwoofer directly to speakers without an amplifier will result in poor sound and risk equipment damage.

What should I do if, after connecting, the radio does not turn on?

Check the following:

  • Availability of +12V BAT+ (yellow wire) and ACC+ (red).
  • Ground quality (the black wire must be securely screwed to the body).
  • Continuity of fuse (check F17 and visually inspect the tracks on the radio board).
  • Speaker connection polarity (short circuit may block switching on).

If the problem persists, try connecting the radio outside the car (for example, to a 12V power supply) - this will help localize the problem.