Installing handsfree and car radio - car radio installation third-party manufacturers

Installing handsfree and car radio - car radio installation third-party manufacturers: handsfree

In many new vehicles car radios are connected to a navigation system and so incorporated that they can no longer be exchanged. For many a disadvantage, but should also be noted that modern car radios take over more functions and thus also connect more technology in the vehicle. This works only through a complete integration into the technology.

Older vehicles or vehicles without special equipment often have one DIN-bay, which makes it possible to use radios of almost all manufacturers. The connections are becoming increasingly unified and very many manufacturers of car radios, as well as vehicle manufacturers use the standardized ISO pin assignment. This allows a car radio without special knowledge or special tools to be replaced.

Car radio connections and automatic antenna

The connections are divided into two groups: Inputs and outputs on the device. Inputs include the power supply and antenna jack (CD changer connections, speakerphone and external music sources are optional), the outputs include the speaker terminals and the preamp output.

When driving a CD changer or an amplifier is the connection of the automatic antenna very important. Even if he bears this name, the connection of the automatic antenna is meant for much more. If the car radio is switched on, the 12 V positive pole is released to this connection and can thus switch on all additional devices connected to it. Thus CD changers, amplifiers or active speakers do not have to be switched on manually.

ISO car radio connection block A (power supply)

Installing handsfree and car radio - car radio installation third-party manufacturers: radio

ISO car radio connection block A (power supply)

Pin 1: Speed ​​signal - A pulsating speed signal for navigation systems
Pin 2: Phone Mute
Pin 3: Not used
Pin 4: + 12 volts - permanent plus for storage (terminal 30)
Pin 5: + 12 volts - output to control z. B. of car power amplifiers or antenna amplifiers
Pin 6: Radio lighting
Pin 7: + 12 Volt - Switched Plus via Zündlschoss (terminal 15)
Pin 8: - Mass of the vehicle chassi

ISO car radio connection block B (loudspeaker)

Installing handsfree and car radio - car radio installation third-party manufacturers: installation

ISO car radio connection block B (speaker connection)

Pin 1: Speaker + right rear
Pin 2: Speaker - right rear
Pin 3: Speaker + right front
Pin 4: Speaker - right front
Pin 5: Speaker + left front
Pin 6: Speaker - left front
Pin 7: Speaker + left rear
Pin 8: Speaker - left rear

ISO car radio connection block C (preamplifier)

Installing handsfree and car radio - car radio installation third-party manufacturers: third-party

ISO car radio connection block C (preamplifier)

Pin 1: TXD connector
Pin 2: RXD connector
Pin 3: + A CD changer
Pin 4: + U CD changer
Pin 5: Ground Pin 6: Ground
Pin 7: Output preamplifier right front
Pin 8: Output preamp right rear
Pin 9: Output preamp left front
Pin 10: Output preamp left rear

adapter plug

Most radios use todaystandardized ISO plug for inputs and outputs. However, there are also a few manufacturers who use their own plug system. For this purpose, there are vehicle-specific adapters, which adapt the pin assignment to an iso-plug.

phantom power

Many car radios have oneactive antenna outputwhich theamplifier the antenna feeds. If a device does not have this, the result may be poor radio reception. The solution is a so-calledphantom power - an adapter, which is supplied with power -, which is switched between radio and antenna and supplies the antenna amplifier with 12 volts.

antenna adapter

Depending on the manufacturer, there are two variants of antenna connections. The older long DIN jacks and the newer short ISO jacks. For both there are ready adapters, which change between the systems and thus make every connection possible.

Expansion of the old car radio

For the dismantling of the old car radio is a special unlocking tool needed. This is included with the purchase and should be kept well. Mainly two variants are distinguished here. There are brackets, which are guided in existing holes and unlock clamps or plates, which unlock and at the same time support the removal of the car radio with a small nose. If the corresponding tools are no longer available, the first variant will find suitable nails and the second narrow screwdriver helpful. In workshops, however, such tools are standard equipment and it can be helped quickly.

If the car radio can not be solved with appropriate tools, could an additional bracket in the rear area be the cause. If car radios are particularly heavy or if the dashboard does not provide sufficient support, the radio is held in place by an additional screw connection at the rear. This is achieved either through the glove box or cumbersome below the dashboard.

Installation of the new radio

Have Car and car radio ISO connectors, No additional tools are needed. Even if the manufacturers use their specific connections and the corresponding adapters are used, installation is possible without additional aids.

Especially in older vehicles, however, there are no connectors and the connections were screwed, plugged or soldered. So as not to damage the new car radio, there are one-sided or open ISO plugs. These have a matching ISO plug and open cable ends to connect them by means of screw or crimp with the cable ends. In doing so, special care should be taken, as a short circuit can lead to cable fire.

  • TheDisconnect the battery of the vehicle: to make sure that during installation no short circuit can be generated.
  • Disconnect the mounting frame from the radio and push it into the shaft. He has many small noses, which must be bent with the screwdriver to the outside, to give the radio a permanent seat.
  • Hold the car radio in front of the shaft and attach the connectors.
  • radio slide into the DIN shaft and make sure that no cable gets trapped.
  • Reconnect the battery and Check the radio for correct operation.

Ignition plus and permanent plus for the station memory

There are very few car radios left that do not have two ports for the positive pole. Port 7 of the ISO connector block A powers the car radio when the ignition is switched on and disconnects it when the ignition is switched off. This allows automatic use of the radio while driving without manual intervention.

To save the settings and radio stations However, the car radio requires a permanent power supply. This is ensured by a further cable to pin 4 of the ISO connector. If the vehicle offers only one permanent plus pole, the cable to the ignition lock can be retrofitted at the specialist workshop. However, it is also possible to connect both ports on the car radio in parallel. However, the radio must always be switched on and off manually.

Install handsfree kit

Since 2001, telephoning in vehicles according to § 23 para. 1a StVO (D) is expressly prohibited and only allowed with a hands-free device. Failure to comply will a fine of 40 euros raised and you get a point in Flensburg.

The handsfree allows the motorist that Making calls in the vehicle without having to hold the mobile phone in your hand. The systems have powerful microphones and a speaker for voice output. However, a distinction is generally made between permanently installed hands-free devices and the "Plug'n Play" hands-free kits.

Handsfree as plug'n play solution

In a plug'n play solution, It is a small mobile speakerphone that can be easily mounted in the vehicle. There are several variants, such as Hands-free kits that are plugged into the cigarette lighter, or wireless solutions for the sun visor. Speaker and microphone are mostly integrated in these devices. The operation is usually via the device itself or via the mobile phone, which is often coupled via Bluetooth with the hands-free device.

Advantages: high mobility, no conversions necessary, low costs.

Disadvantage:requires external power supply, modest voice reproduction, uncomfortable operation.

Fixed installation solutions for hands-free devices

In the fixed installation solution, It is a permanently installed hands-free device, which is permanently connected to the car radio and has a permanent power supply. There are hands-free devices that are already integrated in the car radio, but most are only coupled and have their own display and control panel. Often additional steering wheel remote controls are mounted to make the operation even more comfortable.

When connecting the mobile phone There are holder-bound and hold-free solutions, whereby the trend goes to the hold-free solutions, which are usually realized via Bluetooth.

Some hands-free devices also have one Slot for a second SIM card, which also makes it possible to call without a mobile phone.

Advantage:high comfort, very good voice reproduction, many additional functions.

Disadvantage:higher price for purchase & installation, no flexibility.

Installation of a permanent installation solution

The installation of a built-in speakerphone is now easier than you think. Of course, there are still many systems where each cable has to be manually switched on with difficulty, but many manufacturers now offer solutions, which work with ISO adapters. These adapters allow the handsfree to be paired with the car radio and speaker system. An example of this simple installation is the Parrot CK3100.

The installation of a hands-free device

For the installation they should Tools such as screwdrivers, needle nose pliers and side cutters ready. Of course, depending on the type of vehicle, the conversion can be different.

First is the car battery is disconnected at the front of the engine compartment, to avoid any damage during installation.

Now they should remove the car radio to get there to the ISO connector. Once they have found the connections, they can disconnect the plug-in connection and interpose the adapter of the hands-free system. The adapter itself contains cables with a plug for connection to the hands-free system. You should install the handsfree kit choose a safe place such as the glove compartment.

If the control unit is wired to the car radio and speakers, you can with the display and the microphone Continue. These should also be placed in a suitable position so that they are clearly visible or optimally aligned.

After all components are connected, the car battery can now be clamped to perform a bump test. If the hands-free system works as desired, the car radio can be reinstalled and the installation is complete!

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