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Electrical Wiring
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On Sale
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
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$306.95
$248.35
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$276.25
On Sale
MSD High-Current Solid State Relay Blocks
MSD high-current solid state relay blocks take the place of four standard relays and eliminates unsightly wiring. Four independent channels can be activated using either power or ground. Each channel is capable of handling up to 35 amps of continuous current, providing up to 140 amps of power, and also has the capability of pulse width modulation. The blocks can easily be mounted using the supplied hardware and mounting tabs that can be rotated 90 degrees to accommodate various mounting locations. Clean up your wiring with MSD high-current solid state relay blocks. Features include: * Operates from 7 V to 20 V supply * Four independent channels, 35 amps each continuous or 100 amps for 8 seconds * Combined total continuous current rating of 140 amps * Channels can be run in parallel for devices requiring more than 35 amp single-channel rating * Over-temperature, short circuit, and overload protection * Diagnostic LEDs and status indicators * Multiple mounting options * Single wire activation by switching power or ground * Available in red or black * PWM signal can be used--maximum frequency of 150 Hz and a duty cycle range from 50 to 90 percent
( 18 )
$222.95
$200.65
On Sale
NOS Solid State Relays
NOS solid-state relays address the need for reliable, rugged, and affordable control of various electrical equipment on your race car. Originally designed to control the high-current switching loads of nitrous solenoids, these relays can also be used to control other high-current devices—such as electric water pumps, trans-brakes, and line locks. NOS relays feature an ultra-low activation/release time of less than 16 microseconds to ensure no delays in reaction times. The solid-state relays can also be Pulse Width Modulated (PWM) with no minimum-duty cycle at frequencies up to 1000hz. NOS solid state relays feature: * 5-20 V DC operation * Rugged solid-state circuitry * Easy 3-wire connection * Included terminated pigtail * Included extra contacts for build-your-own wiring * Ultra-fast activation, under 16 microseconds * Pulse Width Modulation (PWM) compatible * PWM 0-100 percent * Up to 1000hz frequency * Vibration-resistant * Maximum continuous current = 40 amps * Maximum switching current = 20 amps
( 14 )
$94.75
$85.28
On Sale
MSD Relay Modules
MSD relay modules are designed to be easily installed in most automotive electrical systems where a high amperage relay is needed. These relay modules are perfect use with high amperage electric fuel pumps and high CFM electric cooling fans. The relay housing comes with a labeled lid that snaps into place providing a clean installation and protecting the main power stud and triggers from contamination or accidental contact. MSD offers these relay modules with different channel outputs, select the model that's designed to meet your application needs. Features include: * 7 V to 20 V supply to fit a wide variety of applications * Independent 40A outputs, to supply power to most aftermarket fuel pumps and electric fans * Configurable single-wire activation with Ground (-) input or 12 V (+) input, with removal of the Tie-Bar * Removable cover for easy accessibility * Low-profile JCASE fuses provide ample protection in case of a short * LED status indicators, show you which channel is triggered at a glance
( 18 )
$58.95
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$161.95
$53.06
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$145.75
On Sale
MSD Solid State Relays
MSD solid state relays clean up your wiring. These modules take the place of four standard relays and eliminate unsightly wiring. Four independent channels can be activated using either power or ground, and each channel is capable of handling up to 20 amps of continuous current—providing up to 80 amps of power. MSD solid state relays provide a compact and clean design to make your wiring project a breeze.
( 23 )
$204.95
$184.45
On Sale
Holley Fuel Pump Relay and Harness Kits
The long wire runs of an electric pump installation can sometimes result in a voltage drop at the pump. Holley fuel pump relay and harness kits offer good insurance that the fuel pump will be receiving full voltage from the battery. The kits can be used with any electric fuel pump, as long as the current load is not above 30 amps. They work with 12, 16 and 24 V systems and come equipped with 12 AWG that provides extra current-carrying capacity with minimal voltage loss. A 30 amp relay is included with a relay socket wired with extra-long leads specifically designed to reduce the number of splices required. Quality insulated crimp connectors are provided to make necessary splices where required and detailed installation instructions are also included.
( 9 )
$174.95
$157.45
On Sale
Holley EFI Unterminated Main Harnesses
Want to fully rewire your Holley EFI installation? Or perhaps you're starting a new build, and want to wire everything perfectly the first time. Holley EFI unterminated main harnesses come with both J1A and J1B connectors fully terminated—with 15 ft. of flying lead wiring to allow you to completely customize your main harness installation. Features include: * J1A and J1B terminated connectors * 60 crimped wires: (57 of 20-gauge wire, and three 18-gauge wire) * 15 ft. long flying lead harness * 30 optional plug seals
Not Yet Reviewed
$435.95
$391.95
On Sale
Scott Drake Turn Signal Switches
Don't take chances with old, questionable, or faulty turn signal switches that can be a danger to you and others. Scott Drake replacement turn signal indicator switches are designed to exceed OEM specifications for dependable, accurate, maintenance-free operation. These units include wiring and are available for a variety of classic makes and models. Trust your vehicle's electrical system needs to Scott Drake.
( 91 )
$43.86
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$119.95
$39.47
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$107.95
On Sale
Holley Split Wire Looms
Holley split wire looms direct from the Holley EFI Wiring Shop. These are high-quality TechFlex F6 black nylon braided split looms they utilize on their main harnesses. They are available in two lengths and a range of diameters from 1/8 in. to 2 in. to build or service your Holley EFI-powered machine.
( 32 )
$40.47
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$106.95
$36.42
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$96.25
On Sale
Holley Trans-Brake Input Protection Modules
Holley trans-brake input protection modules allow for an ECU input to be safely connected directly to the 12 V side of the trans-brake solenoid. They are designed to protect the ECU input from damaging fly-back voltage, which occurs when the trans-brake is released. Not using one of them will cause damage to the ECU over time.
( 4 )
$60.75
$54.68
On Sale
Holley Terminator EFI HyperSpark Ignition Adapters
Holley Terminator EFI HyperSpark ignition adapters are designed to plug-and-play with HyperSpark distributors and Holley EFI main harnesses with an ignition connector. They enable you to run a "timed sequential" fuel strategy for faster responses and cleaner emissions. Complete the improvement of your driving experience with a Holley Terminator EFI HyperSpark ignition adapter.
( 2 )
$47.24
$42.52
On Sale
Holley J2A, J2B, J3, J4 Connector and Pin Kits
Holley J2A, J2B, J3, J4 connector and pin kits are designed for use with your Holley Dominator EFI system. These kits include four connectors and pins for the connectors.
Not Yet Reviewed
$224.95
$202.45
On Sale
Mallory Circuit Guards
Mallory circuit guards combine the protection of the Mallory active power filter from power spikes and surges and other electrical "noise," with the negative spike protection offered by the Mallory power cell. They are designed to plug right in and can even be mounted directly on most distributors. These circuit guards offer great protection for all Mallory UniLite, MBI, and E-Spark modules.
( 14 )
$130.95
$117.85
On Sale
MSD 4-Connector CAN-Bus Hubs
These MSD 4-connector CAN-bus hubs allow users of the Power Grid system controllers to connect other MSD modules to the system for added features. They feature CAN-bus stacking technology so that racers will never run out of spots where they can use plug-in modules. The hubs have four plug-in points with a single output so that they can be plugged into one another.
( 3 )
$149.95
$134.95
On Sale
Mr. Gasket Waterproof Relays
Mr. Gasket waterproof relays are ideal for use on electric fuel pumps, water pumps, cooling fans, off-road lights, and any other application that is exposed to muddy or wet conditions. The pigtail harness has 7 in. long leads with heavy-duty 12- and 18-gauge wire. The connector has the wires molded in rubber and a gasket for a leak-proof seal. Mr. Gasket waterproof relays work great for marine applications and vehicles that are power-washed (Jeeps, 4x4 trucks, UTVs, and dirt track race cars).
( 11 )
$25.87
$23.28
On Sale
ACCEL HEI Power Pigtails
ACCEL HEI power pigtails clean up your engine bay. For GM HEI coil-in-cap, these connectors eliminate the use of single spade connectors that are prone to falling off and killing your ignition. ACCEL pigtails with high-temperature connectors offer a positive fit with a locking tab and shark fin to ensure that the connection between your wiring and HEI stays intact. They house two 10 in. lead wires, one bright red for your 12 V key-switched wire, and the other green for your tachometer.
( 145 )
$19.99
$17.99
On Sale
Holley GM Transmission Wiring Harnesses
Holley GM transmission wiring harnesses are designed to work in conjunction with Holley Dominator EFI fuel injection systems. These application-specific complete terminated harnesses come with a J4 connector to operate General Motors electronic transmissions. For all of your transmission management systems and accessory needs, go with Holley.
Not Yet Reviewed
$286.95
$258.25
On Sale
MSD Ballast Resistors
MSD ballast resistors are just the ticket to connect your MSD coil to your stock points ignition system.Connect your coils the safe and secure way with MSD.
( 34 )
$20.97
$18.87
On Sale
Holley EFI Tach Input Ignition Adapters
Holley EFI tachometer input ignition adapters are for applications using a CD Box, such as an MSD 6AL, while not using timing control. They're designed for use with Sniper 2 EFI systems and external ignition control boxes with tachometer signal output. Not for direct connection to coil.
Not Yet Reviewed
$28.71
$25.84
On Sale
MSD Two Pin Connector Kits
MSD's two pin connector kits replaces damaged connectors or aids in custom wiring. This is the same connector used on MSD's magnetic pickup harnesses. Each kit comes with two connectors and four pins.
( 16 )
$14.78
$13.30
On Sale
MSD Atomic Transmission Control Module Harnesses
Hoop up your Atomic TCU with MSD Atomic transmission control module harnesses. They are designed to fit your specific transmission model and have the proper wiring connector for a direct fit.
( 7 )
$280.95
$252.85
On Sale
AEM Electronics 4-Port AEMnet CAN Hubs
AEM Electronics 4-Port AEMnet CAN Hubs eliminate the need to daisy-chain multiple AEMnet devices together using Y-cables. Now you can easily connect and power multiple AEMnet CAN devices from a central docking station! The four integrated 4-way DTM-style housings provide a reliable AEMnet CAN connection and are safe for engine bay mounting. AEM Electronics 4-Port AEMnet CAN Hubs include the following: * 4-Port AEMnet CAN Hub * Two 4-40 x 7/8 in. flat head screws * Two 4-40 x 0.375 in. washers * Two 4-40 x 9/64 in. Nylock nuts
( 1 )
$101.95
$91.75
On Sale
Holley Shielded Cable Conductor Wires
Holley shielded cable conductor wires are great for wiring up EFI systems or for any wiring job requiring heavy-duty 20-gauge wire. Each cable is internally shielded for maximum noise rejection and come in a variety of different sizes.
( 4 )
$170.95
$153.85
On Sale
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
$619.95
