Wiring Harnesses

Elite 1000/1500 Nissan Silvia S13 and 180SX (SR20DET) Plug 'n' Play Adaptor Harness (HT-140851)

$495.00

Plug-In Fitment

No wiring needed

Component Only

No ECU included

Haltech Premium Universal Wire-in Harness for Nexus T1 and T2 ECU - 2.5m 8ft (HT-181201)

$399.00

Universal Wire-In

Full custom wiring

Component Only

No ECU included

Premium Harness

Longer, more outputs

Nexus S3 Plug 'n' Play Adapter Harness Mitsubishi EVO 4-8 & 2G (HT-186332)

$535.00

Plug-In Fitment

No wiring needed

Component Only

No ECU included

Nexus S3 Plug 'n' Play Adapter Harness Kit - Mazda RX7 FD S7 & 8 (HT-213306)

$2,800.00

ECU

Engine management

Wideband Extension Harness To suit LSU4.9 (HT-010719)

$56.00

Nexus Plug-in IO Expansion Harness 2.5m (8') (HT-189002)

$120.00

Component Only

No ECU included

Nexus Rebel LS Gen IV Oil pressure sensor adaptor harness (HT-186510)

$26.00

Sensor

Engine sensor

Component Only

No ECU included

Nexus DBW Subharness Suits Bosch (HT-186162)

$28.00

Component Only

No ECU included

Nexus Rebel LS 4 Pin Delco Alternator Harness (HT-186124)

$28.00

Component Only

No ECU included

i6 GT150 (USCAR EV6) Primary Injector Harness (HT-186007)

$145.00

Injector

Fuel delivery

Component Only

No ECU included

Nexus S2 Plug 'n' Play Adapter Harness Kit - Honda DC5 (05-06) (HT-212301)

$2,365.00

ECU

Engine management

Plug-In Fitment

No wiring needed

Complete Kit

ECU plus harness

Nexus S2 Plug 'n' Play Adapter Harness Kit - Honda EP3 (02-04) (HT-212302)

$2,365.00

ECU

Engine management

Plug-In Fitment

No wiring needed

Complete Kit

ECU plus harness

Haltech Nexus S3 ECU & Nissan 350Z 2007-2009 Plug 'n' Play Adapter Harness Kit (HT-651247)

$3,345.00

Haltech Elite 2500 + Terminated Harness Kit for Nissan RB Engines (no ignition sub-harness, no CAS sub-harness) (HT-151306)

$2,928.00

ECU

Engine management

Terminated Harness

Engine side ready

Complete Kit

ECU plus harness

Elite 2000/2500 Subaru GDB WRX MY01-05 Plug 'n' Play Adaptor Harness (HT-141220)

$495.00

Plug-In Fitment

No wiring needed

Component Only

No ECU included

Elite 2000/2500 CAS Sub-Harness For Nissan RB Twin Cam (HT-130327)

$61.00

Sensor

Engine sensor

Component Only

No ECU included

Elite 2000/2500 Nissan 300ZX Z32 Plug 'n' Play Adaptor Harness Kit (HT-141259)

$495.00

Plug-In Fitment

No wiring needed

Component Only

No ECU included

Elite 1500 + Mazda 13B S6-8 CAS with IGN-1A Ignition Terminated Harness Kit

$2,757.00

ECU

Engine management

Terminated Harness

Engine side ready

Complete Kit

ECU plus harness

Elite 1500 + Mazda Miata (MX-5) NA Plug'n'Play Adaptor Harness Kit (HT-150922)

$2,120.00

ECU

Engine management

Plug-In Fitment

No wiring needed

Complete Kit

ECU plus harness

Elite 1500 + Honda Civic EP3 Plug 'n' Play Adaptor Harness Kit (HT-150960)

$2,120.00

ECU

Engine management

Plug-In Fitment

No wiring needed

Complete Kit

ECU plus harness

Save 29%

Elite 550 + Premium Universal Wire-in Harness Kit - 2.5m (8') (HT-150405)

$1,000.00 $1,415.00

ECU

Engine management

Universal Wire-In

Full custom wiring

Complete Kit

ECU plus harness

Premium Harness

Longer, more outputs

Save 35%

Elite 550 + Basic Universal Wire-in Harness Kit (HT-150402)

$800.00 $1,234.00

ECU

Engine management

Universal Wire-In

Full custom wiring

Complete Kit

ECU plus harness

Basic Harness

Core outputs only

View product

Toyota Land Cruiser 1FZ-FE 1995-1997 Haltech Nexus Wiring Harness (BF29235)

From $960.00

View product

Toyota Tacoma 2RZ-FE | Toyota Tacoma 3RZ-FE & more 1997-2000 Haltech Nexus Wiring Harness (BF29169)

From $700.00

View product

Mitsubishi EVO IX 2005-2007 Haltech Nexus Wiring Harness (BF29053)

From $960.00

Elite 1000-2500 Mazda RX7 FD3S-S7/8 Plug 'n' Play Adaptor Harness (HT-141329)

$495.00

Plug-In Fitment

No wiring needed

Component Only

No ECU included

View product

Rywire Mil-Spec 13B Haltech Engine Harness - Mazda RX-7 FD3S Rotary (13B-Haltech)

From $1,279.00

Premium Harness

Longer, more outputs

Nexus Rebel LS EV1 Injector Sub-Harness (HT-186501)

$145.00

Component Only

No ECU included

Haltech Nexus T2 ECU + Honda OBD1 Plug 'N' Play Adapter Harness Kit - 92-95 Civic, Integra, Prelude, 90-95 Accord (HT-650901)

$1,479.00

Plug-In Fitment

No wiring needed

Complete Kit

ECU plus harness

Cable Throttle

Mechanical throttle

R35 Coil Bracket for Nissan RB20/25/26 includes bracket coils, connectors and harness (HT-120203)

$1,125.00

Ignition Coil

Ignition output

Complete Kit

ECU plus harness

Nexus S3 Plug 'n' Play Adapter Harness Kit - Nissan Silvia S13 SR20 (HT-213315)

$2,800.00

ECU

Engine management

Nexus S3 Plug 'n' Play Adapter Harness Kit - Mazda RX7 FD S6 (HT-213307)

$2,800.00

ECU

Engine management

Plug-In Fitment

No wiring needed

Complete Kit

ECU plus harness

Nexus S3 Plug 'n' Play Adapter Harness Kit - Mazda MX5 NB / Turbo (HT-213303)

$2,800.00

ECU

Engine management

Plug-In Fitment

No wiring needed

Complete Kit

ECU plus harness

R35 Coil Conversion Kit for Toyota JZ- Includes bracket , coils, connectors and harness (HT-120201)

$1,125.00

Ignition Coil

Ignition output

Complete Kit

ECU plus harness

Previous 1 2 3 4 5 … 37 Next

Remote tuning, done live with Shawn

Book your session

Free consult

30 minutes to scope your build and setup.

First start

Live session to get the engine running safely.

Dial it in

1 or 3 hour tuning blocks on your schedule.

Every wiring harness we sell, from complete plug 'n' play kits to single sub-harnesses. Haltech plug 'n' play adaptor harness kits and Nexus VCU and ECU kits connect to factory wiring, Haltech and Boomslang harnesses cover Nexus and Elite installs, and Rywire builds engine harnesses for swaps.

You'll also find universal wire-in harnesses, terminated engine harnesses, ignition and injector sub-harnesses, wideband adaptor harnesses, PD16 flying lead harnesses and harness sleeving.

Use the vehicle filters to narrow it down, or see Haltech wiring harnesses and wiring services.

Wiring Harnesses

Remote tuning, done live with Shawn

Free consult

First start

Dial it in

Hi I'm Shawn