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2003 Electrical Wiring
Summit Racing™ MDS Solenoid Plugs
Summit Racing™ MDS solenoid plugs are designed to plug the hole where the old MDS solenoids used to live. Commonly used when swapping MDS engines into older non-MDS cars or retro fitting non-MDS cams.
( 4 )
$40.99
Wiring Specialties Pro Series Coil Pack Harnesses
Wiring Specialties Pro Series coil pack harnesses are designed for a direct drop-in installation. These new nylon loomed harnesses will look and perform flawlessly. Select the ignition coil wiring unit tailored for your year/make and engine application. Pro Series coil pack sub-harnesses feature: * Brand new construction * High-temperature nylon looming with adhesive shrink tubing * High-temperature wire (280 degrees F) * OEM connector specs (no cheap aftermarket connectors that fall apart) * Designed for a factory-like installation * OEM wiring connections and 'T' junctions—no soldered * Fully tested after production for an easy plug-and-play replacement * Turnkey engine start guarantee
( 27 )
$169.99
ICT Billet LS Ignition Coil Wiring Harness Extensions
ICT Billet LS ignition coil wiring harness extensions are assembled with OEM tooling, connectors, locks, seals, and terminals. They utilize factory harness wire colors. Compatible with any GM LS engine, these extensions are great for remote locating coils under the engine for a custom look. Don't take a chance with cheap wire connectors that use poor-quality components and have conductivity issues. Choose ICT Billet LS coil wire harness extension length and model recommended for your application.
( 2 )
$43.99
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$105.99
Holley LS Extended-Length Main Engine Harnesses
Holley LS extended-length main engine harnesses are 22 in. longer than previous harnesses. Designed to fit most 24x and 58x LS engines from 1997-2012, they are a perfect fit for installers wanting to mount any Holley EFI ECU inside of the passenger compartment where it is away from the elements, and easy to access, such as on a roll bar or under the passenger seat. Notes: * Plug-and-play with Dominator, HP, Terminator X, and Terminator X Max ECUs * LS1/6 harness interfaces with 24x crank and 1x cam sensors * LS2/3/7 harness interfaces with 58x crank and 4x cam sensors
( 1 )
$688.95
Holley Sniper Transmission Controller Harnesses
Holley Sniper offers transmission-specific controller harnesses for a variety of GM and Ford automatic transmission models. The plug-and-play harnesses are pre-terminated with j4 connectors. Order the harness recommended for your EFI application.
( 2 )
$275.95
FiTech Transmission Control Harnesses
Whether you want to add an automatic transmission to your vehicle with a FiTech fuel injection system or need to replace a damaged harness, FiTech transmission control harnesses get the job done. Repair or customize your vehicle's sensor layout the proper way with the FiTech transmission control harness designed for your application.
( 1 )
$153.00
Fleece Performance Wiring Pigtails
Fleece Performance offers wiring pigtails and replacement connectors for a wide range of vehicles—including many Dodge, Chevrolet, GMC, Ford, and Ram models from the 1990s and up. These replacement parts are ideal for sensors, starter solenoids, cooling fans, and other components under the hood. Fully automated in-house wire cutting and terminal crimping ensure you get the highest quality connectors and pigtails to get your car or truck back on the road quickly. Order the model that corresponds to your electrical application.
( 4 )
$14.99
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$59.99
Summit Racing™ Oxygen Sensor Extension Harnesses
Summit Racing™ oxygen sensor extension harnesses are a must with full-length headers and other specific applications. These extension harness sets feature a direct plug-in design to eliminate the cutting and lengthening of oxygen sensor wires, along with high-temperature sleeving to help protect the wires from heat. They're available in a variety of plug styles, harness lengths, and other options. Order the pair recommended for your vehicle.
( 13 )
$50.99
ATP Automatic Transmission Wiring Harnesses
ATP Automotive provides one of the widest product offerings of automatic gear-shifting control products, including transmission wiring harnesses, for most import and domestic vehicles. ATP designs and manufactures them to meet or exceed the OEM specifications to properly control your drivetrain. Get exact-fit, no-compromise replacement parts when you order the ATP automatic transmission wiring harnesses designed for your application.
( 1 )
$38.99
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$199.99
Holley EFI ECU Connector Kits
You already have the wire and Holley EFI ECU connector kits have the rest of what you need to rewire your EFI installation. Fully terminate your own custom main harness with Holly EFI ECU connector kits. Features include: * Pre-terminated J1A/J1B Tyco Superseal connectors * 20 to 22 gauge pre-terminated wires * 16 to 18 gauge pre-terminated wires * Cavity plugs
( 4 )
$161.95
ACDelco Wiring Connectors
The average vehicle today has hundreds of wiring connectors. ACDelco connectors are available for everything needed, from antennas to trailer wiring, as well as an array of multi-purpose connectors to maintain the optimal operation of your vehicle. Choose GM-recommended replacement wiring connectors to ensure the same performance, durability, and service life you've come to expect from General Motors products.
( 36 )
$2.99
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$140.99
ACDelco GM Genuine Parts Ignition Switches
ACDelco GM Genuine Parts ignition switches are GM-recommended replacements for your vehicle's original components. They are multi-position switches that activate the ignition, accessory, and cranking circuits in your vehicle. These original equipment ignition switches have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
( 8 )
$54.99
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$121.99
AutoLoc Electric Window Crank Switches
AutoLoc electric window crank switches allow you to operate your power windows with your vehicle's original window crank handle. This eliminates the need to mount aftermarket switches in your door panels. To operate your electric window, simply rotate the window crank up or down 15 degrees. To ensure safety, AutoLoc offers a positive dead lock stop and a return-to-center spring design, which creates a heavy-duty system that won't break or snap. These switches are made of billet aluminum and stainless steel fasteners, and will work with your factory window crank to give your vehicle a traditional look. They're available in multiple shaft styles—and are ideal for all vehicles, including hot rods, custom trucks, and cars!
( 12 )
$199.95
ICT Billet Sensor Harnesses
ICT Billet sensor harness extensions make change happen. They offer a selection of pre-terminated sensor to get you plugged in properly. From engine or intake swaps, ICT Billet harnesses have you covered.
( 4 )
$32.99
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$43.99
FiTech Oxygen Sensor Sub Harnesses
Whether you want to add a second O2 sensor to your FiTech fuel injection system or need to replace a damaged harness, FiTech oxygen sensor sub harnesses get the job done. Repair or customize your vehicle's sensors the proper way with the FiTech oxygen sensor sub harness designed for your application.
( 2 )
$58.00
ICT Billet Camshaft Position Sensor Adapter Harnesses
ICT Billet camshaft position sensor adapter harnesses are used when converting from rear-block sensor to front-cover sensor. They will, for example, adapt a Gen IV LS sensor to a Gen III harness. The harnesses are made with OEM-grade TXL wire and assembled with OEM tooling and OEM Delphi (connector, lock, seals, and terminals). Order the model recommended for your application.
( 3 )
$43.99
ACDelco Replacement Wiring Harness Connectors
When you need to make automotive repairs, ACDelco's selection of replacement wiring harness connectors offers you the best fit and function sockets and pigtails to do a variety of jobs. These quality-built, OE-like connectors and adapters provide you with efficient, less costly repair options for GM and American Motors vehicles. They're available in male or female, with an assortment of pins/cavities to fill your needs. Service your vehicle with a name you know and trust--ACDelco.
( 22 )
$1.99
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$76.99
Motorcraft Wiring Connectors
Dozens of sensors, lights, motors, and switches—nearly every accessory on your vehicle is powered through a wiring circuit. When any of those electrical components begin to fail, Motorcraft wiring connectors can help restore proper operation. For repairs or replacement on Ford, Lincoln, and Mercury vehicles, in particular, Motorcraft carries a full line of wiring pigtails and connectors for countless applications, using technologies that exactly replicate the OEM products. Depend on Motorcraft for precision electrical parts with the fit, form, and function you need!
( 8 )
$8.99
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$246.99
Painless Performance Benchtop Flash Pigtails
Painless Performance benchtop flash pigtails enable you to tune or read your PCM outside the vehicle. The pigtails connect to any 12 V source and include PCM and OBDII connections. Benchtop flash your LS Series PCMs effortlessly when using Painless Performance benchtop flash pigtails. They are available for a wide range of Chevy applications from the 1990s and up.
( 2 )
$149.99
ICT Billet Wiring Pigtails
ICT Billet has your LS swap covered with ICT Billet wiring pigtails. Options are available for standard and extended lengths on a multitude of applications. All designed to work with OE sensors for the easiest installation possible!
( 11 )
$22.99
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$58.99
Crown Automotive Blower Motor Resistors
Most cars with an HVAC system use blower motor resistors to control the speed of the fan. If the resistor becomes corroded, the lower speed settings may stop working or the fan will not work at all. Replace your Jeep's resistors with Crown Automotive OE quality parts.
( 1 )
$19.99
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$96.99
LS Classic Series LS Ignition Coil Wiring Harness Extensions
LS Classic Series LS ignition coil wiring harness extensions give you an additional 48 in. of length to enable remote coil mounting. The harnesses are sold in pairs, and feature factory color-coded wires and weatherproof connectors that are designed to plug directly into the factory harnesses. Get the extra-length you need to enable your remote coil mounting, order your LS ignition coil wiring harness extension from LS Classic Series.
Not Yet Reviewed
$139.95
Standard Motor Relays
Don't take chances with old or questionable relays that can leave you stranded. Standard Motor Products relays are designed to exceed OEM specifications for accurate, maintenance-free operation. These replacement units are available in dozens of configurations for easy installation on countless applications. Trust your vehicle's needs to Standard Motor Performance.
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$2.99
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$487.99
Standard Motor Wiring Connectors
High-quality, direct-replacement Standard Motor wiring connectors help eliminate the need for a harness by letting you swap only the damaged connector for a cost-effective repair solution. The terminals feature high-grade materials like copper alloy, brass, and phosphor bronze. Together they provide the connectors with prolonged life and superior performance in harsh environments for each specific application. Standard Motor electrical connectors are 100 percent tested for the proper mechanical and electrical fit, form, and function for your vehicle.
( 140 )
$2.99
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$248.99
