GPX Stream - Typical Installation

The following article will describe the GPX Stream installation process. Please note that some devices or accessories might looks slightly different based on your specific use case.

The following article is available as a video guide by clicking here or at the bottom of this page.

SIM Card Installation

Before mounting the system in the car, make sure a SIM card is installed in your modem. 

The right side of the Node is where you'll find the SIM Card slot.

The Node uses a full size SIM card, or a mini/nano SIM card with adapters.

To install a SIM card, simply unscrew the phillips-head screw and remove the small protection panel. 

Exercise extreme caution when remove the screw and panel while the system is mounted inside a vehicle. Neither elements are magnetic, thus very easy to drop and lose within the vehicle. We recommend removing the Node from the vehicle before opening the SIM card slot.

With the protection panel removed, insert the SIM card with the copper contacts facing towards the inside of the device, and the cutout corner facing down as per the image below.

Push the SIM card in the slot until you feel the mechanism engage, then release it. A properly inserted SIM card will be flush with the inner edge of the modem.

To remove the SIM card, push the SIM card in until the mechanism releases it. The SIM card will release and can then be pulled out.

Mounting the 7GX Cube and Node modem

In most cases, your GPX Stream system came included with a custom double mount, and a roll bar clamp.

The 7GX encoder and Node modem are mounted on the screws of the double mount, and connected to the roll bar clamp.

To get started, unscrew the thumb screw from the roll bar mount, and release the lower part by tilting the screw upwards, releasing it from the bottom part. Ensure the rubber part of the mount does not come off.

Place the mount around a roll bar, tilt the screw downward to clamp down the bottom part, and twist the thumb screw until the mount is tightly secured to the roll bar.

System Wiring - Antenna 

We'll start by connecting your antennas to the modem. The picture below shows the large remote antennas, but please note there are other antennas modems your system may have been delivered with. 

For the large remote antenna, there are two cables labeled LTE1 and LTE2. 

If you have a single remote antenna with two cables, be mindful of the correct terminal connections. For all other antennas, the leads can be connected to either terminal

For the best possible network connection:
• The cable labeled LTE1 should be connected to the left side terminal, closest to the power light and the power terminal.
• The cable labeled LTE2 should be connected on the right side terminal, closest to the SIM card slot.

System Wiring - Node Modem Power

Once the antenna is wired correctly, we'll connect the Node modem to the 7GX encoder. 


You'll find a short (approx. 1ft) cable included with your system. This cable has a USB port on one side, and a 4-pin LEMO connector on the other.

Connect the LEMO connector to the modem, opposite the SIM slot.
Connect the USB connector to the top of the 7GX encoder.

System Wiring - HDMI Cable

The next step is to connect the HDMI cable to your video system (VBOX, camera, etc).

Connect either end of the HDMI cable to the 7GX encoder, and the other end to the VBOX or camera.

If you're using the VBOX system, please ensure the HDMI settings are correct, otherwise the VBOX will not output video over HDMI by default!
To do so, visit the RaceLogic support page here

System Wiring - 7GX Power

The final step is to connect the 7GX encoder power cable.

The 7GX is powered by a succession of two cables: the 7GX power cable, and a power loom. We offer multiple power looms, but this guide will focus on our most popular option, the VBOX power splitter.

Regardless of which power loom option you have chosen, the 7GX encoder is always powered by the same cable. This cable is a short 2-pin DTM (female) connector to a 2-pin LEMO. 

Extreme caution must be exercised with the 2-pin LEMO connectors included with your system.


Plugging in a connector intended for the VBOX into the 7GX will lead to permanent damage.

Always connect the 2-pin DTM (female) to 2-pin LEMO connector into your 7GX encoder first to avoid the issue mentioned above.

Once this cable is connected, you can connect the power loom.

All of our power looms are built with a 2-pin DTM connector on one end, that will attach to the 7GX power cable.

VBOX Power Splitter

The VBOX power splitter has a 2-pin DTM (male) connector, a 2-pin LEMO connector (female), and a 2-pin LEMO connector (male).

To provide power to the 7GX through the VBOX, first disconnect the existing power cable from the car battery to the VBOX.

Connect the cable that was just unplugged to the 2-pin LEMO (female) connector on the VBOX Power splitter.

Next, take the 2-pin LEMO (male) connector from the VBOX Power splitter and connect it to the VBOX power. 

Finally, connect the 2-pin DTM (male) connector from the VBOX Power splitter to the 2-pin DTM (female) connector from the 7GX power cable.

For other power looms provided by GPX (unterminated, 488 Challenge, 12V,...), simply connect the 2-pin DTM (male) connector of the power loom to the 2-pin DTM (female) connector of the 7GX power cable.

The other end of the power loom will either be connected to a specialized connector or directly to battery terminals.

In the case of the Ferrari 488 Challenge power loom, the specialized connector can be found along the wiring loom of the vehicle on the passenger side, usually near the fire extinguisher bottle.

Video Tutorial