Wiring Harnesses

Wiring harnesses are the central nervous system of any vehicle, bundling and protecting the electrical connections that power everything from sensors and fuel injectors to lighting and infotainment. Whether you're replacing a damaged factory harness, building a standalone engine management system, or adding aftermarket accessories, a properly constructed harness ensures reliable signal transmission and resistance to vibration, heat, and moisture.

Our collection includes harnesses built with automotive-grade wire, sealed connectors, and protective loom or sheathing to meet the demands of underhood and interior environments. Key features to look for include:

  • Correct wire gauge (AWG) for current load and length
  • High-temperature insulation (often cross-linked polyethylene or TXL/GXL)
  • OEM-style connectors with sealed terminals where applicable
  • Pre-terminated or customizable configurations for specific components
  • Shielding for sensitive signal circuits (e.g., cam/crank sensors, knock, CAN bus)

From simple two-wire pigtails to full engine bay rewiring kits, choose a harness that matches your build's requirements for durability and compatibility. Always verify connector pin counts, wire colors, and circuit assignments against your vehicle's service manual before installation.

$
-
$
0 selected
0 selected
Apply (0)
Fleece Performance turbine shaft speed sensor for Holset HE351VE and HE300VE/VG turbos

$139.99

In stock
FAST XFI Main Harness with high-quality automotive connectors and terminals for 5.7L and 6.1L Hemi engines.

$501.95

In stock
BLOX Racing Honda OBD2B to OBD1 ECU jumper harness with color-coded wiring and multi-pin connectors

$100.00

In stock
BLOX Racing OBD2A to OBD1 ECU conversion jumper harness with multi-pin connectors and wiring loom.

$100.00

In stock
BLOX Racing OBD0 to OBD1 ECU jumper harness showing conversion connectors and color-coded wiring.

$100.00

In stock
Air Lift 26897 WirelessAIR 2nd Generation replacement main wiring harness with multi-pin connectors.

$90.99

In stock
Air Lift WirelessONE (2nd Gen) air suspension control wiring harness, black insulated wires with multi-pin connectors

$57.99

In stock
Aeromotive 16312 dual fuel pump wiring harness kit featuring high-amperage relays and heavy-gauge wire leads

$260.25

Low in stock
Aeromotive 16308 60A Deluxe Fuel Pump Wiring Kit featuring heavy-duty relay, circuit breaker, and wiring harness.

$358.52

In stock
Aeromotive 16307 fuel pump wiring kit featuring 10-gauge wire, 30A relay, circuit breaker, and installation hardware.

$185.01

In stock
AEM 30-3459 X-Series wideband gauge power harness with multi-pin connector and color-coded wiring leads.
$22.03 $23.83
-8%
In stock
AEM 30-3441 replacement wiring harness with multi-pin gauge connector and Bosch LSU 4.9 sensor plug.
$42.94 $46.45
-8%
Low in stock
AEM 30-2217 Plug and Play OBDII CAN adapter harness with multi-pin dash connector and standard OBDII port plug.
$42.94 $46.45
-8%
In stock
AEM 20-amp relay wiring kit including relay, socket with 80-inch leads, circuit breaker, and mounting hardware.
$69.69 $75.95
-8%
Low in stock
DV8 Offroad universal LED wiring harness featuring 11ft insulated leads, integrated relay, fuse, and dashboard toggle switch

$29.99

In stock

Can’t Find the Part You Need?

Our catalog represents only a portion of the automotive products available through our supplier network. If you cannot find a specific part, brand, or application on our website, submit a request below, and our team will help source it for you.

Please include as much information as possible, such as your vehicle's year, make, model, trim, engine, desired brand, or part number, to help us quickly identify the correct product.

Email is invalid

Image alt