Decoding the wires of radio tape recorders for cars
Decoding the wires of radio tape recorders - designations, decoding of contacts and wires of car radios.
Acoustic group
R = Right speaker.L = Left speaker.FR+, FR- or RF+, RF- = Front right speaker (plus or minus, respectively).FL+, FL- or LF+, LF- = Front left speaker (plus or minus, respectively ).RR+, RR- = Rear speaker - right (plus or minus, respectively).LR+, LR- or RL+, RL- = Rear speaker - left (plus or minus, respectively).GND SP = Speaker common wire.
Radio power connector
- B+ or VAT or KZO or Vir+ or B/Up or B-UP or MEM + 12 = Battery power (plus)
- GND or GROUND or K31 or just a minus = Common wire (Ground), battery minus.
- A+ or ACC or KL 15 or SK or S-kont or SAFE or SWA = +12 from the ignition switch.
- N/C or n/c or N/A = No contact. (Physically the output is there but not connected anywhere).
- ILL or LAMP or sun symbol or 15b or Lume or iLLUM or K1.58b = Panel illumination. +12 volts are supplied to the contact when the side lights are turned on. Some radios have two wires, -iLL+ and iLL-. The negative wire is galvanically isolated from ground.
- Ant or ANT+ or AutoAnt or P.ANT = After turning on the radio, +12 volts are supplied from this contact to control the retractable antenna, if one is present, of course.
- MUTE or Mut or mu or the image of a crossed out speaker or TEL or TEL MUTE = Input to turn off or mute the sound when receiving a phone call or other actions (for example, reversing)
Other possible contacts in radios
Power Control = this is the control for turning on the amplifierP.CONT/ANT.CONT = this is the control of the antenna, power is supplied after turning on the radioILL + and ILL - = these are the wires for adjusting the brightness of the radio backlightAmp = Control contact for turning on the power of the external amplifierDATA IN = Data InputDATA OUT = Data OutputLine Out = Linear outputREM or REMOTE CONTROL = Control voltage (Amplifier)ACP+, ACP— = Bus lines (Ford)CAN-L = Bus line CANCAN-H = Bus line CANK-BUS = Bidirectional serial bus (K-line)SHIELD = Connection braided shielded wire.AUDIO COM or R COM, L COM = Common wire (ground) of the input or output of preamplifiers CD-IN L+, CD-IN L-, CD-IN R+, CD-IN R— = Balanced linear audio signal inputs with changerSW+B = Switching power supply +V battery.SEC IN = Second inputDIMMER = Changing display brightnessALARM = Connecting alarm contacts for the radio to perform car security functions (PIONEER radios)SDA, SCL, MRQ = Exchange buses with the vehicle display.LINE OUT, LINE IN = Line output and input, respectively. D2B+, D2B— = Optical audio link
Marking and color coding of wires
Let's look at the color code for car radio wires:
- Black (indicated by GROUND or GND) is the negative of the battery;
- Red (ACC or A+ marking) is the plus of the ignition switch;
- Yellow (indicated by BAT or B+) is the positive from the battery;
- White with a stripe (marked FL-) is the minus of the front left speaker;
- White without a stripe (indicated by FL+) is a plus of the front left speaker;
- Gray with a stripe (marked FR-) is the minus of the right front speaker;
- Gray without a stripe (indicated by FR+) is a plus for the right front speaker;
- Green with a stripe (marked RL-) is the minus of the left rear speaker;
- Green without a stripe (designation RL+) is a plus for the left rear speaker;
- Purple with a stripe (marked RR-) is the minus of the right rear speaker;
- Purple without a stripe (designation RR+) is a plus for the right rear speaker.
Next, you can see how the car radio connector is pinned out.
Marking and color coding of wires
Let's look at the color code for car radio wires:
- Black (indicated by GROUND or GND) is the negative of the battery;
- Red (ACC or A+ marking) is the plus of the ignition switch;
- Yellow (indicated by BAT or B+) is the positive from the battery;
- White with a stripe (marked FL-) is the minus of the front left speaker;
- White without a stripe (indicated by FL+) is a plus of the front left speaker;
- Gray with a stripe (marked FR-) is the minus of the right front speaker;
- Gray without a stripe (indicated by FR+) is a plus for the right front speaker;
- Green with a stripe (marked RL-) is the minus of the left rear speaker;
- Green without a stripe (designation RL+) is a plus for the left rear speaker;
- Purple with a stripe (marked RR-) is the minus of the right rear speaker;
- Purple without a stripe (designation RR+) is a plus for the right rear speaker.
Some customers ask us questions about the installation instructions for the purchased car radio. In fact, we, like radio manufacturers, believe that the components that make up car audio are not a product that the end consumer should install on their own, without special training in this matter and relevant experience. That is, if you want everything to be done, please go to a car service center. You won’t, without a medical education, take delivery of your own wife because you want to save on the services of a specialist or, for example, you read about it on the Internet, now everything is clear to you and you’re interested in trying it yourself?
