In order to connect the speakers to a brand new radio tape recorder, it is not necessary to go to a car service, spend a rather large amount of money. If you are at least a little versed in electrics, then you can do it yourself.
It is necessary
- To connect the front speakers to the radio tape recorder, you will need 6 meters of flexible speaker cable 2x0, 75 mm, 2 rubber corrugations with a diameter of 14 mm with a 90 degree rotation of the outputs. It is possible without turns, but then you will need to carefully wrap the wires with insulating tape so that they do not rub against the edges of the holes that you drill in the front doors, since the manufacturer did not provide any electrical wiring in the doors.
- To connect the rear speakers, you will need 11 meters of 2x0.75mm speaker wire. Here you can use a not very flexible cable, even an ordinary one is suitable for home electricians of the PVA brand. These wires will lie motionless during the entire service life, so they are not in danger.
In the front door, just below the top hinge, close to the outer skin, make a 13mm hole. The second hole must be drilled 100mm lower so that when the door is opened, the wire turns and does not bend. Then it will last a long time. Try on how the wire will be located in the door, and mark with a marker the section of the wire passing through the corrugation with a small margin.
Wrap 5 layers of insulating tape on the places of the exit from the body and the entrance to the door.
Put on the corrugation and using a thin steel wire, tighten the wire into the door. Attention! In order not to damage the insulation, it is necessary to lengthen the wire to make it easier to go. The part of the wire that will go inside the body must not be laid under the rugs - there the wire can be easily damaged, it must be tied with insulating tape to the common wiring.
Lead the wire to the place where the radio tape recorder will be installed. Leave a margin of 30 … 40 cm for easy connection (if you need to remove the radio tape recorder and put another one) and do the same work with the second front door.
The wiring to the rear speakers must be done on one side of the car, for example, on the left, on the driver's side. You should always strive to collect wires in one bundle.
Fold the 11-meter wire in half. Pull one of the ends for a meter and, as such, wind the wires with insulating tape. Cut the fold with pliers.
Now you need to lay the resulting wiring harness in the car. Better to lay along the threshold. For greater reliability, the floor section of the bundle can be tightened into a plastic conduit for electrical cables. The part of the harness that runs directly over the rear shelf can be secured with plastic clips.
Lift the section of the harness in the front of the car from the floor and tie it with insulating tape to the main wiring, and then lead it out to the same place where the wires for the front acoustics are already taken out. In order not to look for where any wire later, it is better to mark them right away. For example "front right" or abbreviated in English FR. Others: front left - FL, rear right - RR, rear left - RL. Do the same with all the other speaker wires. After that, if the wires are of the same color or without a strip along the entire core, and it is impossible to distinguish between the conditional plus and minus in each pair, then the negative wire must also be marked.
When the wires are marked, check with a tester for a short circuit between the wires and, making sure that there is no such, you can connect them to the connector to put the radio tape recorder in place.
Then we check the speakers for compliance with their nominal impedance. Speakers with a coil resistance of 4 ohms are suitable for modern radio tape recorders. If the device shows an impedance of 3, 2 to 3, 6 ohms, you can install the speakers in pre-prepared places and connect them to the acoustic wiring. The main thing is not to mix up the polarity, otherwise there will be little bass. Make sure that the speaker terminals do not come into contact with metal parts of the machine.
When everything is connected, check the system is working.