Holley Electrical, Lighting and Wiring

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-7%

Holley |

#425553450

Holley 553-450 Dash Bezel, 87-93 Ford Mustang, Racepak Dash Panel

Color:

Black

Sold in Quantity:

Each

$299.95

/each

$322.95

-7%

Holley |

#425553402

Holley 553-402 82-88 G-Body Dash Bezel, 6.86 Inch Dash, 2 Piece

Material Type:

ABS Plastic

Sold in Quantity:

Each

$727.95

/each

$787.95

-7%

Holley |

#425554202

Holley EFI 554-202 Budget Temp, Pressure, IAT and Map Sensor Kit

MAP Sensor Range:

1 bar

Sold in Quantity:

Kit

$318.95

/kit

$345.95

-6%

Holley |

#425553417

Holley 553-417 Dash Bezel, 70-72 Chevelle SS, EFI 6.86In Pro Dash

Color:

Black

Sold in Quantity:

Each

$649.95

/each

$691.95

-8%

Holley |

#425558470

Holley 558-470 Ford 4R70W/4R75W EFI Transmission Control Harness

Sold in Quantity:

Each

GTIN Code:

090127003374

$285.95

/each

$310.95

Headlight & Taillight Wiring Diagram

Check out this headlight wiring and taillight wiring diagram.

Grounding the Electrical System

Are your gauges reading erratically or does your car run out of power at high rpm? It may be the cause of a bad ground. Speedway Motors can show you how to diagnose and fix the problem in no time at all!

Plumbing Your Dual Feed Holley Caburetor

There are a lot of options to plumb your dual feed Holley carburetor. We feel this one is a great solution.

Custom Battery Box and Cables

Speedway Motors employee Jess M. talks about the custom battery tray and cables she built for her '33 Ford.

Hot Rod Horns and Whistles

If you're going to buy a horn isn't it nice to know what it sounds like first? That's why Speedway produced a helpful video to hear the differences in the unique horns that we offer.

Hose & Fitting

Using Koul Tools For Easy AN Hose Assembly

Learn how to use Koul Tools for your AN Hose Assembly with our video guide. Koul Tools make it easy to install a braided rubber hose into the AN fitting socket.

Hooker Header Installation Guide

Hooker headers are installed in a 1967 Pontiac Firebird for increased power and a boost in performance. See how to work through fitment of the steering box, clutch Z bar and starter.

Carbureted LS Engine Guide How to Carb an LS | Build Recipe

Thinking about a carbureted LS? Learn how LS carb conversions work, what parts you'll need, and how carb vs. EFI compares for power and drivability.

$275 Off

Holley |

#4255501631

Holley 550-1631 Terminator X Max Late LT, Trans Control DBW

Ignition Type:

Factory GM

Tuner Style:

Touchscreen Handheld

Throttle Style:

Drive-By-Wire

$3,549.95

/kit

$3,824.95

Holley |

#425558500

Holley EFI 558-500 GM LS 24X EFI Harness Kit

Sold in Quantity:

Each

GTIN Code:

090127721315

$1,065.95

/each

-7%

Holley |

#425553427

Holley 553-427 Dash Bezel, 86-93 Chevy S10, EFI 6.86 In Pro Dash

Color:

Black

Sold in Quantity:

Each

$259.95

/each

$281.95

$187 Off

Holley |

#4255501601

Holley 550-1601 Terminator X GM Gen V Late LT Kit

Ignition Type:

Factory GM

Tuner Style:

Touchscreen Handheld

Throttle Style:

Cable Driven

$2,749.95

/kit

$2,936.95

-7%

Holley |

#425553442

Holley 553-442 Dash Bezel, 73-79 Ford Truck, EFI 6.86 In Pro Dash

Color:

Black

Sold in Quantity:

Each

$386.95

/each

$419.95

-7%

Holley |

#425553385

Holley 553-385 69-76 Nova Dash Bezel, 6.86 Inch Dash, wAC Vents

Material Type:

ABS Plastic

Sold in Quantity:

Kit

$675.95

/kit

$731.95

-7%

Holley |

#425553435

Holley 553-435 Dash Bezel, 77-79 Nova, EFI 6.86In Dash, No Vents

Color:

Black

Sold in Quantity:

Each

$531.95

/each

$575.95

-9%

Holley |

#42526614

Holley 26-614 Analog Style Fuel Level Gauge, Black, 2-1/16 Inch

GTIN Code:

090127029893

$199.95

/each

$219.95

Holley |

#425558473

Holley 558-473 Chrysler 46RE Trans Control Harness, Term X Max

Sold in Quantity:

Kit

GTIN Code:

090127101551

$179.95

/kit

Holley |

#425558112

Holley EFI 558-112 Main Engine Harness for 58x LS w/ TBI

Sold in Quantity:

Each

GTIN Code:

090127717745

$727.95

/each

Holley |

#425558204

Holley 558-204 Universal Unterminated Injector Harness

GTIN Code:

090127667453

$119.95

/each

-7%

Holley |

#425553359

Holley 553-359 6.86 Inch Pro Dash Panel, Black Finish

Material Type:

ABS Plastic

Sold in Quantity:

Each

$259.95

/kit

$281.95

-6%

Holley |

#425553393

Holley 553-393 88-94 GM Truck Dash Bezel, 6.86 Inch Dash, Black

Material Type:

ABS Plastic

Sold in Quantity:

Kit

$649.95

/kit

$691.95

$132 Off

Holley |

#425550929T

Holley 550-929T Terminator X Max LS1 MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

USB/CAN Tuning Cable

$1,949.95

/each

$2,081.95

-7%

Holley |

#425553414

Holley 553-414 Dash Bezel, 68 Chevy Chevelle, Racepak Dash Panel

Color:

Black

Sold in Quantity:

Each

$571.95

/each

$618.95

-7%

Holley |

#425554203

Holley EFI 554-203 Boosted Sensor Kit - MAP, IAT, Temp, Pressure

MAP Sensor Included:

Yes

Sold in Quantity:

Kit

$531.95

/kit

$575.95

$157 Off

Holley |

#425550927T

Holley 550-927T Terminator X Max Early Truck Engine MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

Multec 2

Tuner Style:

USB/CAN Tuning Cable

$2,149.95

/each

$2,306.95

Holley |

#425558503

Holley EFI 558-503 GM TPI and Stealth Ram EFI Harness Kit

Sold in Quantity:

Each

GTIN Code:

090127721346

$899.95

/each

Holley |

#425558501

Holley EFI 558-501 GM 58X EFI Harness Kit

Sold in Quantity:

Each

GTIN Code:

090127721322

$949.95

/each

-6%

Holley |

#425553413

Holley 553-413 Dash Bezel, 64-65 Chevy Chevelle, Racepak Panel

Color:

Black

Sold in Quantity:

Each

$399.95

/each

$427.95

-7%

Holley |

#42526507

Holley 26-507 EFI Analog Fuel Pressure Gauge 0-100 PSI

Gauge Style:

Analog

Sold in Quantity:

Each

$48.31

/each

$52.26

-7%

Holley |

#425553386

Holley 553-386 69-76 Nova Dash Bezel, 6.86 Inch Dash, w/oAC Vents

Material Type:

ABS Plastic

Sold in Quantity:

Kit

$675.95

/kit

$731.95

-7%

Holley |

#425553447

Holley 553-447 Dash Bezel, 70-81 Firebird, Racepak Dash Panel

Color:

Black

Sold in Quantity:

Each

$425.95

/each

$461.95

$188 Off

Holley |

#4255501424

Holley 550-1424 Terminator X Max, 2013-Up Gen III Hemi, EV1

Ignition Type:

Gen III Hemi Coil-on-Plug

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$2,399.95

/kit

$2,587.95

-7%

Holley |

#425553390

Holley 553-390 70-72 Chevelle SS Dash Bezel, 6.86 Inch Dash, Blk

Material Type:

ABS Plastic

Sold in Quantity:

Kit

$675.95

/kit

$731.95

-6%

Holley |

#425558433

Holley EFI 558-433 Digital Dash I/O Adapter

GTIN Code:

090127734391

$374.95

/each

$402.95

Holley |

#425558111

Holley EFI 558-111 Main Engine Harness for 24x LS w/ TBI

Sold in Quantity:

Each

GTIN Code:

090127717738

$749.95

/each

$144 Off

Holley |

#4255501220

Holley 550-1220 Terminator X, Ford Mod 2V or 4V, Smart Coils, EV1

Ignition Type:

Holley Smart Coils

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$2,049.95

/kit

$2,193.95

$144 Off

Holley |

#4255501223

Holley 550-1223 Terminator X, 2003-06 Gen III Hemi, EV6 Injectors

Ignition Type:

Gen III Hemi Coil-on-Plug

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,049.95

/kit

$2,193.95

-7%

Holley |

#425553432

Holley 553-432 Dash Bezel, 98-04 Chevy S10, EFI 6.86 In Pro Dash

Color:

Black

Sold in Quantity:

Each

$259.95

/each

$281.95

-7%

Holley |

#425558414

Holley 558-414 Replacement Main Wiring Harness for Terminator EFI Kits

GTIN Code:

090127685587

$531.95

/each

$575.95

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Products

Holley 553-450 Dash Bezel, 87-93 Ford Mustang, Racepak Dash Panel

Holley 553-402 82-88 G-Body Dash Bezel, 6.86 Inch Dash, 2 Piece

Holley EFI 554-202 Budget Temp, Pressure, IAT and Map Sensor Kit

Holley 553-417 Dash Bezel, 70-72 Chevelle SS, EFI 6.86In Pro Dash

Holley 558-470 Ford 4R70W/4R75W EFI Transmission Control Harness

Related Articles

Holley 550-1631 Terminator X Max Late LT, Trans Control DBW

Holley EFI 558-500 GM LS 24X EFI Harness Kit

Holley 553-427 Dash Bezel, 86-93 Chevy S10, EFI 6.86 In Pro Dash

Holley 550-1601 Terminator X GM Gen V Late LT Kit

Holley 553-442 Dash Bezel, 73-79 Ford Truck, EFI 6.86 In Pro Dash

Holley 553-385 69-76 Nova Dash Bezel, 6.86 Inch Dash, wAC Vents

Holley 553-435 Dash Bezel, 77-79 Nova, EFI 6.86In Dash, No Vents

Holley 26-614 Analog Style Fuel Level Gauge, Black, 2-1/16 Inch

Holley 558-473 Chrysler 46RE Trans Control Harness, Term X Max

Holley EFI 558-112 Main Engine Harness for 58x LS w/ TBI

Holley 558-204 Universal Unterminated Injector Harness

Holley 553-359 6.86 Inch Pro Dash Panel, Black Finish

Holley 553-393 88-94 GM Truck Dash Bezel, 6.86 Inch Dash, Black

Holley 550-929T Terminator X Max LS1 MPFI Kit

Holley 553-414 Dash Bezel, 68 Chevy Chevelle, Racepak Dash Panel

Holley EFI 554-203 Boosted Sensor Kit - MAP, IAT, Temp, Pressure

Holley 550-927T Terminator X Max Early Truck Engine MPFI Kit

Holley EFI 558-503 GM TPI and Stealth Ram EFI Harness Kit

Holley EFI 558-501 GM 58X EFI Harness Kit

Holley 553-413 Dash Bezel, 64-65 Chevy Chevelle, Racepak Panel

Holley 26-507 EFI Analog Fuel Pressure Gauge 0-100 PSI

Holley 553-386 69-76 Nova Dash Bezel, 6.86 Inch Dash, w/oAC Vents

Holley 553-447 Dash Bezel, 70-81 Firebird, Racepak Dash Panel

Holley 550-1424 Terminator X Max, 2013-Up Gen III Hemi, EV1

Holley 553-390 70-72 Chevelle SS Dash Bezel, 6.86 Inch Dash, Blk

Holley EFI 558-433 Digital Dash I/O Adapter

Holley EFI 558-111 Main Engine Harness for 24x LS w/ TBI

Holley 550-1220 Terminator X, Ford Mod 2V or 4V, Smart Coils, EV1

Holley 550-1223 Terminator X, 2003-06 Gen III Hemi, EV6 Injectors

Holley 553-432 Dash Bezel, 98-04 Chevy S10, EFI 6.86 In Pro Dash

Holley 558-414 Replacement Main Wiring Harness for Terminator EFI Kits

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