NOTE：
The car head unit's power cable interface is designed based on reserved ports of vehicles within a specific year range to ensure physical and electrical compatibility.
However, the provided power cable may not use all the original port's pins, as different vehicle versions and configurations may vary. The key is whether the necessary pins for the head unit are present, not matching all original pins.
After connecting the power cable, turn the ignition key to check if the unit powers on and the audio functions properly.
Wiring Diagram
Machine backplane interface
①、③connector
From top to bottom: ②, ④, ⑤connector
From top to bottom: ⑥, ⑦, ⑧connector
Before mating with the original wires, you can wire the wires as shown in the diagram, and connect the wire connector with the corresponding number to the corresponding connector on the back of the car.
FAQ
1. Unable to switch on
You need to select different connection options according to the different interfaces of the original radio, as shown below:
(1) If the power cord plug you are applying is plug A (the power cord connector is shown in the figure below), please connect the B socket, which is connected to the A plug, to the C socket (C belongs to the extension cord of canbus).
big head socket
(2) If the power cord plug you are applying is D plug (power cord connector is shown below):
Method 1: Match the E socket with the C socket
Method 2: Match the F socket with the C socket.
Note：The wires are divided into A/B parts, if the original wires can only connect to part B, connect part B. If both A/B parts can be connected, connect both parts together to the original wires.
Note: If you are using a small connector socket and cannot switch on the car or get the original information, you may need to connect the gateway cable.
Connection method:
1.Connect the black connector of the green gateway cable to the black connector of the small header jack (shown by the circle in the picture).
2. Connect the other end of the green gateway cable (shown by the arrow in the diagram) to the gateway connector of the car gateway decoder box, which is usually located under the storage box on the passenger side of the car and can be seen by removing the cover.
Below the passenger compartment
Green gateway cable connects to stock gateway connector
2. Steering wheel controls do not work
Schematic diagram of protocol path (using W211 as an example)
1.Make sure that the 8Pin socket on the power cable is connected to the 8Pin socket on the back panel of the machine.
2.Verify that the product canbus protocol is selected, that it is selected correctly, and how the protocol path information is obtained:
（1）You can check the picture published in the product link.
（2）Check the official website：https://essgoo.com/pages/database and enter the model and year to get the information.
（3）Ask the customer service personnel to get the protocol path information.