Product Summary

Universal Fit, 22 Number of Circuits

  • Whether you are building an option loaded car or just want extra circuits available for upgrades, this 22 circuit harness is perfect for your build
  • The included Deluxe Install Package provides all of the essential accessory switches, terminals, a GM HEI pigtail connector, (2) heavy-duty universal relays, a battery relocation cable kit, a braided grounding strap, heat shrink tubing, and wiring tools
  • Premium high-temperature wire with easy to read labels printed every six inches ensures a trouble-free installation
  • Comprehensive instructions with full-color pictures takes the headache out of your wiring project
  • GM column wiring plug (ribbon plug) is included and comes pre-wired for your convenience

Comes as a Kit

Key Specs

MFG. Part #91603076
Number of Circuits22
Fuse Block IncludedYes
Compatible with GM ColumnYes
Ignition Key LocationColumn or Dash

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Speedway Motors 91603076 Details

Whether you're building an option loaded car or just want to have extra circuits available for future updates, the 22-circuit harness is perfect and makes any job painless. Compact 5-1/2"L x 4-1/2"W x 3-1/4"H  fuse block holds 18 standard push-in fuses and can be mounted almost anywhere.  This universal wiring harness is an updated version of our best-selling 20 circuit harness, with the addition of 2 extra fused circuits.

In addition to the 22 circuit universal harness, the Deluxe Wiring Package includes a GM HEI Pigtail Connector, (2) additional heavy-duty universal relays, a battery relocation cable kit, a braided grounding strap, PowerBraid Conduit, terminals, connectors, heat shrink tubing, and all of the essential wiring tools necessary for a smooth and professional installation!

Kit Includes:

(1) Speedway Universal 22 Circuit Wiring Harness

Each high-temperature wire is color-coded and labeled every six inches. Also includes GM type steering column connectors. To keep costs down and the quality high, this harness does not include any switches, light sockets or plugs that you would normally already have.

  • Harness has 22 circuits (all fused)
  • Taillight leads measure 17' long
  • Includes plug for GM column, headlight switch, dimmer switch, and signal flashers
  • Copper Wire

(1) Titan Tools 22400 Heat Gun

  • 12.5 Amps 120V Heat Gun
  • Ideal for plastic welding, shrink tubing, and paint stripping
  • Dual temperature setting
  • 3 position rocker switch: off, high & low
  • Durable ABS body
  • Double insulated
  • 6 1/2 ft. cord
  • Rated Power: Low Setting 750W, High Setting 1500W
  • Blowing Speed: Low Setting: 10CFM (280 L/min), High Setting: 17CFM (480 L/min)
  • Temperature: Low Setting: 572 degrees, High Setting: 932 degrees

(1) Titan Tools 11475 Self Adjusting Wire Stripper

  • Automatically adjusts to strip 24 - 10 AWG wire and cable
  • Crimps 22 -10 AWG insulated and non-insulated wire terminals
  • Crimps 7 - 8mm ignition terminals
  • Wirecutter
  • Comfortable TPR hand grips

(1) Titan Tools 11477 Ratcheting Wire Terminal Crimper

  • Ratcheting mechanism design
  • Adjustable crimping compression
  • Steel jaw
  • Color-coded wire sizes
  • Red 22-18AWG-DIN 0.5-1.0mm
  • Blue 16-14AWG-DIN 1.5-2.5mm
  • Yellow 12-10AWG-DIN 4-6mm

(25 piece) Pico 2264G Seamless Butt Connectors, Blue 16-14 AWG

  • Insert Stripped Wires Into Connector
  • Crimp Apply Heat Until Solder Sleeve Melts
  • Continue Heating Until Adhesive Flows & Tubing Shrinks
  • Cool For a Perfect Watertight Connection

(25 piece) Pico 2254G Seamless Butt Connectors, Red 22-16 AWG

  • Insert Stripped Wires Into Connector
  • Crimp Apply Heat Until Solder Sleeve Melts
  • Continue Heating Until Adhesive Flows & Tubing Shrinks
  • Cool For a Perfect Watertight Connection

(1) Muscle Braided Nylon Split Wire Harness Wrap Kit

Finish the job right with our complete Muscle Braided Nylon Split Wire Harness Wrap Kit. Contains all the appropriate diameter wire wrap, ties, and tape.

Our Muscle Braided Nylon Split Wire Harness Wrap is the modern and easy to install solution for new or existing wiring harnesses while providing a sleek, modern appearance. Your wiring is securely and attractively bundled in a durable automotive-grade braided nylon sleeve and installation is simple thanks to an overlapping split opening that requires no tools.

  • Flexible braided nylon wire loom protects wires from heat and abrasion
  • Laterally split overlapped opening retains wires without the need for tape or tie wraps
  • Resistant to major automotive chemicals and oils
  • Includes:
    • 30 feet of 1/8 inch Braided Nylon Split Wire Loom
    • 30 feet of 1/4 inch Braided Nylon Split Wire Loom
    • 25 feet of 1/2 inch Braided Nylon Split Wire Loom
    • 10 feet of 3/4 inch Braided Nylon Split Wire Loom
    • 12 feet of Quick Seal Tape
    • 5 Mag Daddy Small Zip Tie Mounts, 16lb
    • 171 Piece Heat Shrink Tubing Assortment
    • 25 Black Zip Tie with Mount Hole, 14 inch
    • 25 Black Zip Tie with Mount Hole, 6 inch

(1) GM HEI Distributor Wiring Pigtail Connector

This wiring pigtail features a dual HEI connector that helps clean up your engine bay by eliminating the use of single spade connectors to make battery and tachometer connections. 10 inch long wires that are red and green to identify battery and tachometer.

  • 10-inch length
  • Red and green wires to identify battery and tach leads
  • Sold each

(2) Universal Electric Relays

This heavy-duty relay takes the heavy-amp load off the switch, thus preventing an overheated circuit and a possible wiring harness fire. Works well with electric fans and horn circuits too. 40 amp relay.

The wiring for the relay is as follows:

  • Short Red Wire (from relay post 87) = power lead to horn or fan
  • Long Red Wire (from relay post 30) = main power supply in
  • Short Black Wire (from relay post 85) = makes ground connection thru a temp sensitive switch or a grounding horn button
  • Long Gray Wire (from relay post 86) = connects to switched 12-volt power (like ignition switch) so horn or fan turns on/off with key

Includes relay, circuit breaker, wire, terminals and instructions.

(1) 2-Gauge Battery Relocation Cable Kit

Two-gauge standard copper battery wire with ends.  This kit is intended for use with top-post batteries. It contains a 2 ft. long negative battery cable with terminals on both ends. The 18 ft. positive cable has a terminal (post clamp) at the 'battery' end, and a terminal to crimp on the other end.

Also included: 6 E-Z ties and 2 short pieces of shrink sleeve.

(1) Taylor 20308 Braided Grounding Strap Cable

These braided grounding straps from Taylor Cable are 8" long 4-gauge and feature tin-coated copper construction.

  • 8" long
  • 1" wide
  • Tin coated copper
  • 4-gauge

(1) Pico 0002-U Uninsulated Terminal Kit

  • 185 pieces
  • Includes plastic box

(1) Titan Tools 45238 Heat Shrink Tubing Kit

This heat shrink tube assortment kit comes with 171 pieces. This kit contains:

  • (25) pieces/each color - green, white, red, black - 5/64" x 1-3/16"
  • (10) peices - blue -  5/32" x 2-3/8" 
  • (10) pieces - black -  3/16" x 2-3/8"  
  • (8) pieces - red - 13/64" x 2-3/8"  
  • (6) pieces - white -  15/64" - 2-3/8"  
  • (11) pieces - blue - 23/64" - 3-9/16"  
  • (11) pieces - white - 5/16" x 3-9/16"
  • (1) piece - black - 25/64" x 39-3/8" 
  • (7) pieces - yellow - 23/32" x 3-9/16" 
  • (7) pieces - green -  15/32" x 3-9/16" 

(1) Titan Tools 11436 Digital Circuit Tester Electrical Test Light

  • Check your circuits digitally with this volt tester from Titan Tools
  • Highly acurate voltage readout and is very easy to use
  • Circuit test light with digital voltage number readout
  • Gives you an actual voltage value
  • Detects voltage, power, ground, and circuit integrity
  • LCD screen is backlit
  • For use with 6/12/24 volt DC electrical systems
  • LED indicator: green (-) / red (+)



Our universal wiring harness is the perfect solution for vehicles with no reproduction harness options, custom builds, or the budget-minded DIY builder. This highly versatile wire harness works with nearly any 12-volt vehicle, engine, and transmission combination (carb or EFI, automatic or manual), including engine swaps. Whether you're building an option-loaded car, or just want to have extra circuits available for future updates, this 22-circuit wiring kit has you covered.

A compact fuse box mounts discreetly out of view, or choose an open installation for easy access. Any unused circuits can be bundled up and tucked away under the dash for future use. The harness includes generous 17-foot-long tail light leads for easy mounting in most vehicles, even full-size cars, trucks or vans.

Plug-and-Play with GM Tilt Columns

Wiring up the steering column controls can be a daunting task, but our harness makes it easy. This harness plugs directly into most GM-style tilt steering columns. It connects to aftermarket tilt columns from ididit, Flaming River or Speedway Motors, as well as factory GM tilt columns from 1968-1996 cars, trucks and vans (see our full list of compatible GM columns). If you’re sourcing a column from the junkyard, look for one with a flat “ribbon” plug, either 3-7/8” or 4-1/4” long (with 10 or more wires). Ignition switch plugs to connect “keyed” GM columns are also included in this kit.

Not using a GM tilt column? No problem. This harness easily splices into other steering columns with the included pin-out wiring diagram (it helps to have a wiring schematic for your vehicle here, too). Wires are conveniently bundled and labeled every 6 inches - just take your time and be attentive when splicing it in. Note that this wiring kit includes a GM-style headlight switch, dimmer switch and turn signal flasher for reliable service and easy replacement.

Modern High-Quality Insulated Wire

Patches and splicing are tedious and unreliable. Your car deserves better! Start fresh with modern polyethylene-insulated, stranded bare copper wire. Each harness is constructed from premium quality GXL automotive wiring, with the appropriate wire diameter for each fused circuit (ranging 8 to 16 gauge). Every strand of this wire harness is covered with a high-temperature (-40°F to +257°F) outer coating, color coded, and labeled to aid in a smooth installation for any DIY enthusiast. In other words, you can expect the same quality of automotive wiring used by the big 3 OE manufacturers.

Modern Fuses

A modern fuse block design gives easy service and fuse replacement. The fuse block arrives complete with modern ATO/ATC blade fuses and a common 2-prong style flasher. No more fragile, corroded glass fuses! Crimp connectors and terminals are included to get you started right away.

Conveniently Bundled Wires

Our universal 22-circuit harness consists of 11 branches that are conveniently bundled, so you can get started right away. Here’s a quick rundown of those branches:

  • Engine compartment feed wires (EFI engines will need an additional engine-specific harness)
  • Instrument cluster feed wires (mechanical or electric gauges)
  • Ignition/Headlight/Dimmer/Turn Signal/Brake Light switch lead wires with connectors
  • Radio/Heater/Air Conditioning feed wires
  • Rear body feed wires
  • Additional accessory wires

The included 7-page instruction booklet, with color printed pictures, covers each of these pre-bundled circuits in detail.


  • Perfect for restoration projects, custom vehicles or budget-minded DIY builders
  • Universal design for nearly any 12-volt vehicle – great for engine swaps!
  • Plug-and-play with 1968-96 GM tilt steering columns (can be spliced into others)
  • Connects directly to aftermarket tilt columns from Speedway Motors, ididit & Flaming River
  • Works with nearly any engine/transmission combination (carb or EFI, auto or manual)
  • Tail light leads are 17 ft. in length; suitable for cars, trucks, longbox pickups, and vans
  • Constructed of GXL insulated, automotive-grade copper wiring
  • High-temp polyethylene insulation makes it viable in engine compartments
  • Includes appropriate wire diameter for each fused circuit (ranging 8 to 16 gauge)
  • Compact 5.5” x 4.5” x 3.3” fuse block mounts discreetly out of view
  • Two-piece fuse block design makes for easy fuse block removal/service
  • Uses modern blade-style ATO/ATC fuses in place of outdated glass fuses
  • 22 individually fused circuits, conveniently bundled into 11 “quick start” bales
  • Each wire strand is color-coded and labeled every 6” for easy identification
  • Includes proven GM-type switches, for easy repair/replacement if needed
  • Complete wiring harness kit weighs less than 8 lbs. installed

Speedway Motors 91603076 Specifications

MFG. Part #91603076
BrandSpeedway Motors
Number of Circuits22
Fuse Block IncludedYes
Compatible with GM ColumnYes
Ignition Key LocationColumn or Dash
Fuse StyleATO/ATC
Sold in QuantityKit