Haltech Nexus R3 Pinout & Wiring Diagram Guide Technical pinouts, connector assignments, and suggested wiring layouts for the Haltech Nexus R3 .
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Component Specifications​
The Haltech Nexus R3 is a premium control unit designed for high-performance motorsport and automotive applications.
Specification Details Component Name Haltech Nexus R3 Manufacturer Haltech Part Number HT-212000Category Control unit Dimensions 196mm (W) x 130mm (H) x N/A (D)
Connectors & Pin Assignments​
Below is the structured electrical wiring pinout map for the Haltech Nexus R3. Wiringly automatically tracks suggested wire specifications and color collections from this master component.
Superseal 1.0, 34POS, COD 1 (2-1437285-3)​
Connector Specifications​
Property Details Connector Part Number 2-1437285-3Compatible Terminals 3-1447221-4, 3-1447221-3
Pin Function/Description Suggested Wire Color 1 Injector 1 Blue 2 Injector 2 Blue with Black Stripe 3 Injector 3 Blue with Brown Stripe 4 Injector 4 Blue with Red Stripe 5 Injector 5 Blue with Orange Stripe 6 Injector 6 Blue with Yellow Stripe 7 Injector 7 Blue with Green Stripe 8 Injector 8 Blue with Violet Stripe 9 DPO 1 Violet with Black Stripe 10 GND Black 11 GND Black 12 DPO 2 Violet with Brown Stripe 13 Ignition SW Input Pink 14 DPO 3 Violet with Red Stripe 15 DPO 4 Violet with Orange Stripe 16 DPO 5 Violet with Yellow Stripe 17 DPO 6 Violet with Green Stripe 18 Switched 12V In Red 19 HBO 1 Brown with Black Stripe 20 HBO 2 Brown with Red Stripe 21 HBO 3 Brown with Green Stripe 22 HBO 4 Brown with Pink Stripe 23 CAN 1 H White 24 CAN 1 L Blue 25 Switched 12V In Red 26 ECR Output Black with Red Stripe 27 Ignition 1 Yellow with Black Stripe 28 Ignition 2 Yellow with Red Stripe 29 Ignition 3 Yellow with Orange Stripe 30 Ignition 4 Yellow with Green Stripe 31 Ignition 5 Yellow with Brown Stripe 32 Ignition 6 Yellow with Blue Stripe 33 Ignition 7 Yellow with Violet Stripe 34 Ignition 8 Yellow with Grey Stripe
Superseal 1.0, 34POS, COD 2 (3-1437290-9)​
Connector Specifications​
Property Details Connector Part Number 3-1437290-9Compatible Terminals 3-1447221-3, 3-1447221-4
Pin Function/Description Suggested Wire Color 1 Trigger + Yellow 2 Trigger - Green 3 Home + Yellow 4 Home - Green 5 SPI 1 Grey with Brown Stripe 6 SPI 2 Grey with Red Stripe 7 SPI 3 Grey with Orange Stripe 8 SPI 4 Grey with Yellow Stripe 9 8V Sensor supply Orange with White Stripe 10 AVI 1 White 11 AVI 2 White with Yellow Stripe 12 AVI 3 White with Grey Stripe 13 AVI 4 White with Violet Stripe 14 AVI 5 White with Green Stripe 15 AVI 6 White with Orange Stripe 16 AVI 7 White with Black Stripe 17 AVI 8 White with Brown Stripe 18 AVI 9 White with Red Stripe 19 SPI 5 Grey with Pink Stripe 20 SPI 6 Grey with Green Stripe 21 CAN 2 H White 22 CAN 2 L Blue 23 Knock 1 White 24 Knock 2 White 25 Sensor 5V Orange 26 Signal Ground Black 27 AVI 10 Green 28 AVI 11 Green with Black Stripe 29 WBI 1 Heater + Grey 30 WBI 1 IPN / VM Yellow 31 WBI 1 APE / IP Red 32 WBI 1 UN / RE Black 33 WBI 1 Heater - White 34 WBI 1 RT / IA Green
Haltech Surlok Red (HT-030032)​
Connector Specifications​
Property Details Connector Part Number HT-030032
Pin Function/Description Suggested Wire Color 1 Battery + Red
Haltech Surlok Black (HT-030033)​
Connector Specifications​
Property Details Connector Part Number HT-030033
Pin Function/Description Suggested Wire Color 1 GND Black
Harness Integration in Wiringly​
Wiringly simplifies the process of creating complete, error-free wiring schematics. Using our interactive digital canvas, you can drop the Haltech Nexus R3 directly into your project, automatically load these pin assignments, and connect them to your power distribution units or engine control units. If you are new to the platform, we recommend starting with our Quick Start Guide .
The platform tracks your wire colors, gauges, and terminal types automatically, compiling a complete bill of materials (BOM) and cutting list for your physical build.