Your digital dash, explained.
An overview of the connections, harness layout and setup resources for our Haltech UC-10 digital dash kits.
General reference · Check the pinout supplied with your kit.
The tables below show an example RRC harness layout. Connector assignments, wire colours and enabled inputs can vary between kits. Use your supplied harness labels and kit-specific pinout for installation. Identify the factory wires using the workshop manual for your vehicle’s model year and build date.
What is involved in fitting the dash?
The dash end of the harness is already terminated. The vehicle side connects to your factory wiring: power, ground and inputs such as the left and right indicators, high beam, park brake, park lights and fuel level. Use the factory workshop manual to identify each circuit, then connect it to the matching function on the supplied harness.
Engine data connections and configuration depend on your engine and ECU. The example below uses CAN for engine data; other installations may require a different arrangement. Reverse-camera and ambient-temperature connections are also shown below.
Which wire connects where?
Read each row from left to right: the pin at the screen, the corresponding connection at the other end of our harness, then the factory circuit to identify in your workshop manual. B5 means cavity 5 of our Plug B. It is not a factory connector number.
Example: left indicator
UC-10 pin 22 → our harness Plug B, pin 5 (B5), White/Purple wire → factory left-indicator signal.
| UC-10 screen pin | Other end of RRC harness | RRC wire colour | Factory circuit to identify |
|---|---|---|---|
| 3 | Power lead | Red | Switched 12V supply |
| 4 | Ground lead | Black | Battery ground |
| 16 | B1 | Brown/Black | Alternator-excite circuit |
| 17 | B2 | Yellow/Purple | Park / side-light signal |
| 18 | B3 | Black/Pink | Fuel-level sender signal |
| 20 | B4 | Grey/Blue | Low-range status signal |
| 22 | B5 | White/Purple | Left-indicator signal |
| 23 | B6 | Purple/Yellow | Right-indicator signal |
| 24 | B7 | Pink/Brown | Park brake / handbrake signal |
| 25 | B8 | Grey/Yellow | High-beam signal |
Wire colours above describe our example harness, not the factory vehicle wiring. Locate the factory connector, cavity and wire colour in the correct workshop manual. Confirm signal type and dash configuration before connecting; the same circuit can work differently across vehicle models. Alternator and low-range connections must suit the vehicle’s system.
Buttons and the ambient sensor
| UC-10 screen pin | Other end of RRC harness | Connects to |
|---|---|---|
| 6 | A1 · Green | Screen-change button signal |
| 13 | A2 · Black | Screen-change button ground |
| 14 | A3 · Black | Trip button ground |
| 15 | A4 · Grey/Yellow | Trip button signal |
| 30 | AMB1 · Black/White | Ambient sensor ground |
| 21 | AMB2 · Orange | Ambient sensor signal |
These are button and sensor connections, rather than factory vehicle warning-light inputs. In the example harness, UC-10 pins 1 and 2 carry CAN High and CAN Low for compatible engine-data integration. Use the engine/ECU connection instructions supplied for your kit. Camera wiring is listed in the full screen-pin table below.
Two ends of the same harness
One 34-pin plug
Connects the harness to the Haltech UC-10 screen.
Plugs A, AMB and B
Connect the screen-button, ambient-temperature and vehicle circuits at the other end of the harness.
The diagrams below show the wire-entry side of each plug, with the latch at the top. The mating-face view is reversed. Confirm against the connector drawings supplied with your kit.
Screen end · UC-10 34-pin plug
This is the single 34-pin plug that connects to the UC-10 screen. The table lists its pins and shows the matching connector at the other end of the harness in the “Plug” column. Plugs A, AMB and B are shown separately below.
| Pin | Input / output type | Function | Wire colour | Plug |
|---|---|---|---|---|
| 1 | Can High | CAN connection to ECU | White | |
| 2 | Can Low | Blue | ||
| 3 | 12V Switched Input | Red | ||
| 4 | Battery Ground | Black | ||
| 5 | 5V Output | Unused | ||
| 6 | Avi 10 (Button 1) | Switch screens | Green | A1 |
| 7 | Camera +12V Power | Reverse Camera 12V | Red | Reverse |
| 8 | Camera Input | Reverse Camera Signal | Yellow | Reverse |
| 9 | Camera Ground | Reverse Camera Ground | Black | Reverse |
| 10 | Unused | Unused | ||
| 11 | Unused | Unused | ||
| 12 | 12V Switched Output | Unused | ||
| 13 | Ground For Buttons | Switch screens ground | Black | A2 |
| 14 | Ground For Buttons | Trip ground | Black | A3 |
| 15 | Spi 4 (Button 2) | Trip | Grey/Yellow | A4 |
| 16 | Alternator Excite | To alternator excite | Brown/Black | B1 |
| 17 | Avi 9 (Park Lights) | Park light input | Yellow/Purple | B2 |
| 18 | Avi 1 (Fuel Level) | Fuel level input | Black/Pink | B3 |
| 19 | Avi 2 (Rev Cam Back Up 12V) | Reverse Cam Back Up 12V | White | Reverse |
| 20 | Avi 3 (Low Rge) | Low Range Sensor 12V | Grey/Blue | B4 |
| 21 | Avi 4 (Ambient Temp) | Ambient Temp Sensor | Orange | AMB2 |
| 22 | Avi 5 (Left Indicator) | Left indicator input | White/Purple | B5 |
| 23 | Avi 6 (Right Indicator) | Right indicator input | Purple/Yellow | B6 |
| 24 | Avi 7 (Handbrake) | Handbrake input | Pink/Brown | B7 |
| 25 | Avi 8 (High Beam) | High beam input | Grey/Yellow | B8 |
| 26 | Dpo 1 | Unused | ||
| 27 | Dpo 2 | Unused | ||
| 28 | Dpo 3 | Unused | ||
| 29 | Dpo 4 | Unused | ||
| 30 | Signal Ground | Ambient temp Ground | Black/White | AMB1 |
| 31 | Spi 3 | Unused | ||
| 32 | Spi 2 | Unused | ||
| 33 | Spi 1 | Unused | ||
| 34 | Tacho Input | Unused |
Vehicle end · separate plug connections
These are the smaller plugs at the other end of the harness. The tables below map each cavity back to the UC-10’s 34-pin connector, using the example harness layout shown here.
Plug A · 4 pin
Screen-change and trip-button connections.
| Plug cavity | UC-10 pin | Function | Wire colour |
|---|---|---|---|
| A1 | 6 | Switch screens | Green |
| A2 | 13 | Switch screens ground | Black |
| A3 | 14 | Trip ground | Black |
| A4 | 15 | Trip | Grey/Yellow |
Plug AMB · 2 pin
Ambient-temperature sensor connections.
| Plug cavity | UC-10 pin | Function | Wire colour |
|---|---|---|---|
| AMB1 | 30 | Ambient temp Ground | Black/White |
| AMB2 | 21 | Ambient Temp Sensor | Orange |
Plug B · 8 pin
Vehicle indicator, lighting, fuel-level, handbrake, low-range and alternator-excite connections.
| Plug cavity | UC-10 pin | Function | Wire colour |
|---|---|---|---|
| B1 | 16 | To alternator excite | Brown/Black |
| B2 | 17 | Park light input | Yellow/Purple |
| B3 | 18 | Fuel level input | Black/Pink |
| B4 | 20 | Low Range Sensor 12V | Grey/Blue |
| B5 | 22 | Left indicator input | White/Purple |
| B6 | 23 | Right indicator input | Purple/Yellow |
| B7 | 24 | Handbrake input | Pink/Brown |
| B8 | 25 | High beam input | Grey/Yellow |
“Reverse” in the main table refers to the reverse-camera connections. Use your supplied camera harness and its connection instructions.
Setup references
Haltech NSP softwareOfficial software downloads for display configuration and calibration.↗ Display dash quick-start guideOfficial Haltech display installation and setup reference.↗How to set fuel levelHaltech video covering fuel-level setup.↗Ambient-temperature sensor installationSensor mounting and harness routing.↗This page explains the harness layout. It does not confirm mount fitment or electrical compatibility for a particular vehicle.