1 Overview
The PEMP Linux car screen comes with multiple wiring harnesses. This guide describes the function and connection method of every wire and connector on the harnesses, to help you complete wiring quickly during installation and troubleshoot faults efficiently.
Three types of ISO harnesses are supplied with PEMP Linux products:
Model 9213: Universal harness, compatible with most vehicle models.
Model 9219: Compared with the universal version, it is equipped with an additional audio filter and a Connect to New Knob (Use When Without OEM Knob) connector.
Model 9807: Designed exclusively for BMW E65/E66. It features dual CAN interfaces (CAN1 & CAN2) and an extra MOST BOX connector.
We have explained the connection and function of each wire in detail in our video. Please refer to our YouTube video for more information: https://youtu.be/T-asHIo-Efs
2 General Wiring: Functions and Connection Methods
The following connectors apply to all three harness types and cover the basic wiring steps for installation.
2.1 ISO Male Plug and Female Socket
Connection Method:
1. Connect the OEM head unit ISO plug to the female end of the ISO harness.
2. Connect the male ISO plug of the harness to the rear of the OEM head unit.
3. If your vehicle is equipped with a fiber optic cable, relocate it to the male ISO plug of the harness.
2.2 Power Supply Connector
Function: Supplies operating power to the PEMP device.
Connection Method: Simply plug this connector into the power port of the PEMP device.
2.3 AUDIO OUT Connector and Audio Cable
Function: The AUDIO OUT connector is the audio output port of the device, which sends audio from the screen to the OEM sound system for playback.
Connection Method:
1. Connect one end of the Audio Cable to the AUDIO OUT connector on the device.
2. Connect the other end to the AUX IN jack in the car armrest box.
2.4 REAR CAMERA / VIDEO INPUT Connector & Red Camera 12V Wire
Function: REAR CAMERA is for video input of the reversing camera. VIDEO INPUT can be used for the front camera or dashcam video input. The red Camera 12V wire supplies power to the camera.
Reversing Camera Connection:
Front Camera Connection:
2.5 A/B Ground Connector
Function: Used to resolve screen noise or audio distortion. It eliminates ground loop noise by breaking the ground loop.
Connection Method: If you encounter screen noise or audio distortion, disconnect this connector and test the audio again.
2.6 ACC IN Wire / +12V OUT Wire
Connection Method: These two wires do not need to be connected anywhere under normal installation.
2.7 USB Cable
unction: Mainly used for PEMP screen system upgrade and wired CarPlay / Android Auto.
Connection Method: Connect the USB cable to the USB port of the screen, and connect the other end to your mobile phone or a USB flash drive for system upgrade.
2.8 LVDS Adapter Cable
Function: For ultra-thin screens, it adapts the OEM LVDS cable to achieve compatibility between the PEMP ultra-thin screen and the original vehicle.
Connection Method: Connect the LVDS Adapter Cable in series between the OEM LVDS cable and the PEMP screen.
3 Additional Harnesses for Model 9219
If you have the Model 9219 harness, the following harnesses are added on the basis of the standard version.
3.1 Connect to New Knob (Use When it Without OEM Knob) Connector
Function: Used to connect the aftermarket knob interface.
Connection Method:
1. If your vehicle has no OEM knob: Connect this connector to the aftermarket knob interface.
2. If your vehicle is equipped with an OEM knob: Leave this connector unconnected.
3.2 Audio Filter
Function: No operation is required under normal conditions. It is only used to troubleshoot audio distortion or noise.
Connection Method:
1. Open the audio filter box and disconnect the internal harness;
2. Mate the two connectors directly;
3. Recheck if the audio noise or distortion persists.
4 Additional Interfaces for Model 9807 (E65/E66)
If your vehicle is a BMW E65/E66, the following dedicated connectors for Model 9807 can be found on the harness.
4.1 CAN1 / CAN2 Protocol Interfaces
Function: Used for protocol communication with the original bus of BMW E65/E66.
Connection Method: Use an adapter cable to adapt the CAN1 / CAN2 interfaces.
4.2 MOST BOX Cable
Function: Used to connect the PEMP MOST Box to receive optical fiber audio signals.
Connection Method: Connect the MOST BOX cable to the corresponding port on the PEMP MOST Box.
5. After-Sales Support
If you have any further questions, please contact our official customer support team for technical assistance:
(After-sales email:service@pempcar.com)
Jeeky
- Electronics Engineer
