Haltech Elite 4 Port DTM-4 CAN Hub

Haltech 4 Port DTM-4 CANbus Hub - Haltech Elite ECUs and Digital Displays

You've got a Haltech Elite ECU running your build (Elite 1500, Elite 2500, or one of the Pro Plug-In versions for K-series), and you're adding CAN devices to it as the build matures. An IC-7 dash, a WB1 wideband, a CAN keypad, a GPS speed module. Each of those needs to talk to the ECU on the same CAN bus, and the Elite ECU has one CAN connector to give. This is the part that turns one CAN port into three. Haltech part HT-159000.

What It Is and How It Works

The Haltech Elite CAN Hub is a 4-port DTM-4 connector junction box that branches the Elite ECU's single CAN bus output into three additional connection points. One port connects back to the ECU (or to another hub upstream of it). The other three ports connect to CAN-enabled devices. Each port carries the same four signals: CAN High, CAN Low, switched 12V power, and ground, all routed through the standard Deutsch DTM-4 connector that Haltech uses across the Elite product line.

The hub matters because the Elite ECU's CAN connector is a single physical port. Without a hub, you'd have to chain devices in a line, and that gets messy fast when devices are mounted in different parts of the car (display on the dash, wideband near the exhaust, keypad on the center console). With the hub, you run one cable from the ECU to the hub, mount the hub in a central location, then run individual cables out to each device. Cleaner, easier to troubleshoot, and easier to add or remove devices later.

Each hub supports up to three CAN devices off one Elite ECU. If you need to connect more than three, Haltech designed the hubs to chain. Run a cable from one of the hub's ports to the input of a second hub, and you've expanded to five devices total (hub one keeps two device ports plus the chain-out, hub two adds three more). Keep chaining as needed, though most builds stop at one hub since most setups don't run more than three CAN peripherals.

Specs

ECU Compatibility

What You Can Connect To It

Any Haltech CAN device with a DTM-4 connector. The most common builds in HR's audience use this hub to consolidate combinations of the following:

What to Know Before You Buy

The hub does not eliminate CAN bus termination requirements. Haltech CAN networks use 120-ohm termination resistors at each end of the bus to prevent signal reflections that cause communication errors. The Elite ECU has internal termination on its end. The last device on the network needs to be terminated either through its built-in termination feature (most Haltech CAN devices have this option enabled or disabled in software) or with an external termination resistor. The hub does not provide termination on its own. If you're seeing CAN communication errors after install, termination is the first thing to verify.

Cable runs matter. CAN is robust, but excessive stub lengths off a hub branch can cause signal integrity issues. Keep individual device cable runs reasonable (Haltech recommends keeping each branch under a couple of meters where possible). For long runs to dash-mounted displays in a coupe with the ECU in the passenger footwell, a single hub run typically works fine. For long runs in a panel van or trunk-mounted ECU setup, plan cable routing carefully.

The included 300mm cable connects the hub to the ECU. Each CAN device has its own dedicated cable that's sold separately or included with the device. The IC-7 ships with its own DTM-4 to display cable. The WB1 ships with its own cable. When you add the hub to your build, you don't need additional cables for the device side, since each device brings its own. You only need the included 300mm cable to get from ECU to hub.

This is a build-it-once, set-it-and-forget purchase. Once installed, the hub sits in the harness as permanent infrastructure. The DTM-4 connectors are sealed and rated for engine bay use, so mounting location flexibility is good. Most builders mount the hub behind the dash, in the glove box area, or in the kick panel where it stays accessible for future device additions but stays out of the way of regular service work.

Direct plug 'n' play with the Elite ECU CAN port means no harness pinning, no soldering, and no Deutsch crimp work required for installation. Plug the included cable into the ECU's CAN connector, plug the other end into the hub's input port, and you're ready to start adding devices. This is the kind of part that makes a complex Haltech build manageable for builders who'd rather spend their time tuning than wiring.