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Rywire - Premium Motorsports Wires, Electronics, & Accessories

Founded and based in Garden Grove, California, Rywire Motorsport Electronics produces high-performance engine harnesses, brake/clutch line kits, PDM switch panels, and drive‑by‑wire components.

Known for their flagship Mil‑Spec, wire‑tucked harnesses, Rywire uses military‑grade Tefzel wiring, Raychem heat‑shrink, and OEM connectors to deliver clean, reliable, and expandable solutions tailored to engine swaps and ECU upgrades.

Their product lineup includes application‑specific harnesses for Hondas (B-, K-, S‑series), Mazdas (RX‑7), Supras, and more, plus support for EV builds and custom installations. Each harness is hand‑assembled in‑house, offering options like charge/ground kits, fuse‑relay sub‑harnesses, and coil‑on‑plug adapters.

Rywire ships dozens of harnesses weekly to builds ranging from drift and drag to show cars and track setups. With a strong DIY and pro support network—including install guides, direct customer service, and active YouTube—Rywire combines engineering precision, motorsport insight, and enthusiast accessibility in every loom.

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

Rywire
$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28
In stock

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

Rywire
$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28
In stock

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

Rywire
$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28
In stock

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

Rywire
$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28
In stock

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

Rywire
$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28
In stock

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

Rywire
$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28
In stock

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

Rywire
$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28
In stock

Rywire Honda K-Series (w/FuelTech 550 ECU) Engine Harness w/Chassis Specific Adapter

$1,916.28 - $1,916.28
$1,916.28
$1,916.28 - $1,916.28
$1,916.28
User 1

Rywire Honda K-Series (w/FuelTech 550 ECU) Eng Harness w/OBD2 Alt/EV14 Inj/AEM IAT/MAP (Adapter Req)

Rywire
$1,822.35 - $1,822.35
$1,822.35
$1,822.35 - $1,822.35
$1,822.35
In stock

Rywire Honda K-Series (w/FuelTech 550 ECU) Eng Harness w/OBD2 Alt/EV14 Inj/AEM IAT/MAP (Adapter Req)

$1,822.35 - $1,822.35
$1,822.35
$1,822.35 - $1,822.35
$1,822.35
User 1

Rywire Honda K-Series Tucked Budget Engine Harness w/OBD2 02-04 RSX K20 Sensor/Headlights VSS

Rywire
$744.77 - $744.77
$744.77
$744.77 - $744.77
$744.77
In stock

Rywire Honda K-Series Tucked Budget Engine Harness w/OBD2 02-04 RSX K20 Sensor/Headlights VSS

$744.77 - $744.77
$744.77
$744.77 - $744.77
$744.77

Rywire Honda K-Series Tucked Budget Engine Harness w/Chassis Specific Adapter

Rywire
$1,075.17 - $1,075.17
$1,075.17
$1,075.17 - $1,075.17
$1,075.17
In stock

Rywire Honda K-Series Tucked Budget Engine Harness w/Chassis Specific Adapter

$1,075.17 - $1,075.17
$1,075.17
$1,075.17 - $1,075.17
$1,075.17

Rywire Honda K-Series Tucked Budget Engine Harness w/Chassis Specific Adapter

Rywire
$1,075.17 - $1,075.17
$1,075.17
$1,075.17 - $1,075.17
$1,075.17
In stock

Rywire Honda K-Series Tucked Budget Engine Harness w/Chassis Specific Adapter

$1,075.17 - $1,075.17
$1,075.17
$1,075.17 - $1,075.17
$1,075.17
Photo - Primary
Photo - Primary

Rywire Honda K-Series Tucked Budget Engine Harness w/OBD2 02-04 RSX K20 Sensor/Firewall VSS

Rywire
$744.77 - $744.77
$744.77
$744.77 - $744.77
$744.77
In stock

Rywire Honda K-Series Tucked Budget Engine Harness w/OBD2 02-04 RSX K20 Sensors (VSS by Firewall) (Requires Chassis Adapter)

$744.77 - $744.77
$744.77
$744.77 - $744.77
$744.77

Rywire Honda K20 02-04 VSS to 2005+ VSS 5in Speed Sensor Adapter

Rywire
$33.15 - $33.15
$33.15
$33.15 - $33.15
$33.15
In stock

Rywire Honda K20 02-04 VSS to 2005+ VSS 5in Speed Sensor Adapter

$33.15 - $33.15
$33.15
$33.15 - $33.15
$33.15
User 1

Rywire Honda K-Series Universal Fuse Box (Use w/02-04 K20/Rywire Eng Harness)

Rywire
$469.63 - $469.63
$469.63
$469.63 - $469.63
$469.63
In stock

Rywire Honda K-Series Universal Fuse Box (Use w/02-04 K20/Rywire Eng Harness)

$469.63 - $469.63
$469.63
$469.63 - $469.63
$469.63
User 1

Rywire 88-91 Honda Civic/CRX SI/HF/EX K-Series Chassis Specific Adapter

Rywire
$330.40 - $330.40
$330.40
$330.40 - $330.40
$330.40
In stock

Rywire 88-91 Honda Civic/CRX SI/HF/EX K-Series Chassis Specific Adapter

$330.40 - $330.40
$330.40
$330.40 - $330.40
$330.40
Photo - Primary

Rywire Honda K to B Series MAP Sensor Adapter

Rywire
$33.15 - $33.15
$33.15
$33.15 - $33.15
$33.15
In stock

Rywire Honda K to B Series MAP Sensor Adapter

$33.15 - $33.15
$33.15
$33.15 - $33.15
$33.15
User 1

Rywire 92-95 Honda Civic / 94-01 Acura Integra (EG/DC) K-Series Chassis Adapter Harness

Rywire
$330.40 - $330.40
$330.40
$330.40 - $330.40
$330.40
In stock

Rywire 92-95 Honda Civic / 94-01 Acura Integra (EG/DC) K-Series Chassis Adapter Harness

$330.40 - $330.40
$330.40
$330.40 - $330.40
$330.40
Photo - Primary

Rywire OBD2 Harness to OBD1 Injector Adapters

Rywire
$66.30 - $66.30
$66.30
$66.30 - $66.30
$66.30
In stock

Rywire OBD2 Harness to OBD1 Injector Adapters

$66.30 - $66.30
$66.30
$66.30 - $66.30
$66.30
Photo - Primary

Rywire OBD1 Harness to Injector Dynamics (Denso) Injector Adapters

Rywire
$66.30 - $66.30
$66.30
$66.30 - $66.30
$66.30
In stock

Rywire OBD1 Harness to Injector Dynamics (Denso) Injector Adapters

$66.30 - $66.30
$66.30
$66.30 - $66.30
$66.30
Photo - Primary

Rywire OBD1 Harness to Injector Dynamics (EV14) Injector Adapters

Rywire
$66.30 - $66.30
$66.30
$66.30 - $66.30
$66.30
In stock

Rywire OBD1 Harness to Injector Dynamics (EV14) Injector Adapters

$66.30 - $66.30
$66.30
$66.30 - $66.30
$66.30

Rywire Honda F/H-Series Mil-Spec Engine Harness w/Chassis Specific Adapter

Rywire
$910.52 - $910.52
$910.52
$910.52 - $910.52
$910.52
In stock

Rywire Honda F/H-Series Mil-Spec Engine Harness w/Chassis Specific Adapter

$910.52 - $910.52
$910.52
$910.52 - $910.52
$910.52

Rywire Honda F/H-Series Mil-Spec Engine Harness w/Chassis Specific Adapter

Rywire
$921.57 - $921.57
$921.57
$921.57 - $921.57
$921.57
In stock

Rywire Honda F/H-Series Mil-Spec Engine Harness w/Chassis Specific Adapter

$921.57 - $921.57
$921.57
$921.57 - $921.57
$921.57
Photo - Primary
Photo - Primary

Rywire Honda F/H-Series Mil-Spec Eng Harn w/OBD1 Dist/Inj/Alt & 92-95 Plugs (Adapter/Plug Color Req)

Rywire
$827.65 - $827.65
$827.65
$827.65 - $827.65
$827.65
In stock

Rywire Honda F/H-Series Mil-Spec Eng Harn w/OBD1 Dist/Inj/Alt & 92-95 Plugs (Adapter/Plug Color Req)

$827.65 - $827.65
$827.65
$827.65 - $827.65
$827.65
Photo - Primary

Rywire Ground Kit

Rywire
$93.93 - $93.93
$93.93
$93.93 - $93.93
$93.93
In stock

Rywire Ground Kit

$93.93 - $93.93
$93.93
$93.93 - $93.93
$93.93

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