There are several advantages of having a 454 tbi wiring harness. We are here to help you choose the right one for your purposes from all the best available products in market today.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Nilight 454 Tbi Wiring Harness READ REVIEW

Best With Great Seller: Buy: Ateam Performance 454 Tbi Wiring Harness READ REVIEW

Best For Engine Compartment: Buy: Mictuning 454 Tbi Wiring Harness READ REVIEW

Best For Worth The Money: Buy: Auto Parts Prodigy 454 Tbi Wiring Harness READ REVIEW

Best For Steering Column Section: Buy: Vowagh 454 Tbi Wiring Harness READ REVIEW

Best For Classic Cars: Buy: Mophorn 454 Tbi Wiring Harness READ REVIEW

Best For Race Cars: Buy: Cheriezing 454 Tbi Wiring Harness READ REVIEW

Best For Heavy Duty: Buy: A-Team Performance 454 Tbi Wiring Harness READ REVIEW

Best For Customer Service: Buy: Wmphe 454 Tbi Wiring Harness READ REVIEW

Best With Product Description: Buy: Painless 454 Tbi Wiring Harness READ REVIEW

Best For Universal Fitment: Buy: Fexon 454 Tbi Wiring Harness READ REVIEW

Best For Hot Rods: Buy: Vesen 454 Tbi Wiring Harness READ REVIEW

Best Overall: Nilight 454 Tbi Wiring Harness

Buy on Amazon

We are personally inclined towards Nilight 454 Tbi Wiring Harness, It is not so pricy, but it overachieves its purpose and is outstanding in important aspects. The nilight 454 tbi wiring harness can be trusted for premium quality, It is back up and has a high quality design. Three extra blade fuses for you to choose, which is more scientific and reasonable. And, it is designed for the right side, It is great for simple instructions and has a safe design.

Above all, the nilight 454 tbi wiring harness is right, It is pretty straight forward and has a great design.

Most customers agree that the harness is great value for the entire harness. And, they strongly agree that the harness comes with a 25a fuse. Additionally, it is a led light wiring kit. And, they strongly agree that the harness is a good harness at a great price. Overall, buyers found this to be one of the best harnesses for daily purposes.

• This can stand up to 10, 000 times under normal use.
• This is easy to replace and has a simple design.
• This is actually a nice feature.
• Manufacturer says: staff in our customer service team have rich experience in after-sales service.

Best With Great Seller: Ateam Performance 454 Tbi Wiring Harness

Buy on Amazon

The Ateam Performance 454 Tbi Wiring Harness is suitable and reliable and fits well with your regular use. The ateam performance 454 tbi wiring harness comes with a great item, It is crafted with great quality and has professional design. A-team performance 170072 hei distributor battery and tachometer pigtail harness eliminates the need for obsolete spade terminals that can fall off and kill your ignition. And, it does the job, It is made for simple installing and has an excellent design.

Finally, the ateam performance 454 tbi wiring harness allows for perfect form, would be perfect with fast shipping, It is right and has a simple design.

Most customers opine that the harness is a perfect fit and used for power line in and for tach lead out. And, a few also found that the harness is easy to connect to an existing harness. And, a few strongly agree that the harness is so important and these fit perfectly with no issues with most hair. Therefore, customers were eager to recommend it to friends and families.

• This fits perfectly into the hair distributor.
• Two 7" leads for easy installation and a clean connection.
• This fits a chevy hair distributor cap.
• This is a great way to add an aftermarket tach with factory looks.

Best For Engine Compartment: Mictuning 454 Tbi Wiring Harness

Buy on Amazon

The Mictuning 454 Tbi Wiring Harness should be able to handle its purpose and duties with ease. The mictuning 454 tbi wiring harness is great for super easy install, is pretty simple, it is effective and has a safe design. Wire the switch to the battery or any place of your car system to get power for the switch. And, it works as advertised, comes with blue wire and it is great for clean installation.

Finally, the mictuning 454 tbi wiring harness works well in safety protection and conversion circuit.

Almost all buyers opine that the harness is a great way to get everything needed to add a complete circuit. Further, they also found that the harness features cost them more, but were well thought out. Also, they say that this kit works great and gives plenty of length for wiring.

• This is used for non - led lights.
• This comes with everything needed.
• This is a good picture of the wiring harness since it's all tucked away nicely.
• This works well, but the two end after the.

Best For Worth The Money: Auto Parts Prodigy 454 Tbi Wiring Harness

Buy on Amazon

The features department is where Auto Parts Prodigy 454 Tbi Wiring Harness truly manages to shine. The auto parts prodigy 454 tbi wiring harness is easy to understand, it is very happy and has a high quality design. Your purchases help a local New York family. This item is a 21 circuit wiring harness.

The harness is easy to use and it back up. And, the harness is good for trunk light, is good for air conditioning, it is perfect for color coding and has a professional design. Most importantly, the auto parts prodigy 454 tbi wiring harness works with nearly any 12.

Almost all customers quickly discovered that the harness was definitely worth the money. In addition, a few also found that the harness will fit any vehicle as long as you understand how automotive systems work. Moreover, they strongly agree that the harness is a universal kit and will always need tweaking to fit your needs. With no doubts, this harness passed the test and had very satisfied buyers eager to share their experience.

• 21 circuit wiring harnesses are all coded by gm color for easier installation.
• This is a universal kit and should work on anything.
• This will ... there’s plenty of wire length.
• This is right, it is good for the bottom line and has a great design.

Best For Steering Column Section: Vowagh 454 Tbi Wiring Harness

Buy on Amazon

If you often find yourself scrambling for an appropriate and satisfactory harness, Vowagh 454 Tbi Wiring Harness is your end point. The vowagh 454 tbi wiring harness comes with black wire, is perfect for instruction manual, all and has a safety design. The Manufacturer says: This workbook is designed for both our labeled and color-coded harnesses. The tail section harness is designed to be routed to the back of the vehicle inside along the floor.

The harness is designed for heat shrink, is right and it is very happy. Finally, the vowagh 454 tbiwiring harness will be displayed with its label then it's color.

Most buyers quickly discovered that the harness would not match factory wiring or match the factory schematic. In addition, they also found that the harness was a generic hot rod wire pack. Also, a few say that this wire harness will work well with your car, but because you have fuel injection you will have to get a second one to control that injection. In conclusion, buyers found this to be one of the best harnesses for daily purposes.

• 💫To make installation even easier, the wires are gm color coded.
• Read these instructions before starting this installation.
• 2X signal flashers and 1 pre-wired relay connector with horn relay.
• The Manufacturer says: so make use of the blank space we provide for your notes.

Best For Classic Cars: Mophorn 454 Tbi Wiring Harness

Buy on Amazon

For a low asking price, Mophorn 454 TBI wiring harness has managed to overwhelm their customers by packing as many features as they could. The Mophorn 454 Tbi Wiring Harness is made with copper wiring and it is brand new. Make sure this fits by entering your model number. The 21 circuit wiring harness with universal usage, can be applied in a wide range of applications, specially designed for chevy mopar, and found at hotrods.

The harness is made for good value and it is easy to use. Further, it comes with engine and transmission sensor connectors, 21 circuits and 17 fuse blocks for hot rod vehicle, fuel pump relay, switched power ignition relay, performance shift mode wiring, etc. Finally, the mophorn 454tbi wiring harness features lower eccentricity and resistance performs excellently in electrical conduction and is reliable in use.

Almost all buyers found that the harness is a harder job than most think. Moreover, they strongly agree that the harness is gym based and makes things easy. Also, they also found that the circuit wiring harness kit is suitable for the 1990 k3500 you mentioned, since it is a modified line, it depends on whether the customer will modify it. hope you can understand. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

• This has turn signals and has professional design.
• This comes with ground wires to add to that. It is great for classical chevys.
• This is made easier by the labeling on the wires.
• This is a very good wiring harness for any hot rod.

Best For Race Cars: Cheriezing 454 Tbi Wiring Harness

Buy on Amazon

Cheriezing makes a beautiful and great harness with classic and smartly chosen materials. The Cheriezing 454 Tbi Wiring Harness is highly recommended, Additionally it is suitable for the American market. Manufacturer says: We will continuously update our product information based on the feedback from manufacturers and customers to make our product information more accurate. Also, the harness comes with detailed instructions and has specific pages for gm, ford and mopar. Most importantly, the cheriezing 454 tbi wiring harness is labelled, easy to recognize, and circuit.

With no doubts, this product passed the test and had very satisfied buyers eager to share their experience.

• 【Package included】: 1 x 14 circuit wiringharness kit as the picture showed.
• Manufacturer says: order from Cheriezing, we offer a 12.
• 1 x 14 circuit wiring harness kit as the picture showed.
• Wires are extra long to help accommodate whatever building you are working on.

Best For Heavy Duty: A-Team Performance 454 Tbi Wiring Harness

Buy on Amazon

The A-Team Performance 454 Tbi Wiring Harness's material feels more premium than its price would suggest. The a-team performance 454 tbi wiring harness is plenty of extra and it works well with an electric fuel pump. Best suited for upgrading your muscle car hot rod street rod. These kits are universal and come with detailed specific instructions pages for gm, ford, and mopar installations.

The harness includes horn relay and connector, turn and hazard signals, dimmer switch connector, circuit breaker for headlights, 2 flashers, 1 alternator plug, 2 ignition switch connectors and more. Most importantly, the a-team performance 454 tbi wiring harness can be used on almost all vehicles.

Most buyers found that the harness is a universal kit. This is very nice, even with the low price. In short, most customers call the harness functionally comfort, and no one questions it.

• This is made for head light and it comes with long wires.
• Long wires, labeled every 12 inches, and easy to install.
• 12-circuit standard universal wiring harness kit.

Best For Customer Service: Wmphe 454 Tbi Wiring Harness

Buy on Amazon

We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate harness. The Wmphe 454 Tbi Wiring Harness is exactly that - it's a simple harness that hits all the right notes. The wmphe 454 tbi wiring harness is compatible with drive by cable ls1 4l60e engine automatic transmission harness 1997. Including all engine and transmission sensor connectors, dash connections, which include speedometer, park neutral, -tcc, tachometer, malfunction indicator, and DLC port, complete with detailed instructions. This independent wiring harness kit can be used for various wiring connections of the engine.

Most importantly, the wmphe 454 tbiwiring harness is easy to use, it works perfectly and has professional design.

Almost all buyers found that the harness can use a multimeter to see if it has power. Also, they also found that the harness was a 4 pin alternator but only one wire in it.

• This is for an ls based engine.
• This is made with fast shipping and has a longer design.
• The manufacturer says: if you need it, please go to our store and search.
• This comes with wire color, it is blue and has a great design.

Best With Product Description: Painless 454 Tbi Wiring Harness

Buy on Amazon

Best part: Painless 454 Tbi Wiring Harness costs comparatively low and it is available to ship in 24 hours. The painless 454tbi wiring harness that comes with the kit is decent quality and it is great for decent quality. This harness also requires the following mating parts. These engines were factory equipped in gm full-size trucks, vans, and suvs, s-10/s-15 trucks & suvs, oldsmobile bravadas, chevy astro vans, and camaro/firebird platforms.

The harness is standalone and is not intended to replace the oem engine wiring. Lastly, the painless 454 tbi wiringharness includes all the original connections for the original emissions but are available separate, see the specs page for more details.

Most customers found that the harness was perfect fit and good quality. Also, they strongly agree that the harness is designed to work with the factory ecm. Obviously, this product passed the test and had very satisfied buyers eager to share their experience.

• Not the inexpensive primary wire you find in other harnesses.
• The Manufacturer says: we don't just make wiring, we make painless wiring.
• When reliability and performance can't be compromised, you want TXL wire.

Best For Universal Fitment: Fexon 454 Tbi Wiring Harness

Buy on Amazon

If you want nothing but the most convenient harness, then Fexon 454 Tbi Wiring Harness is the one you should definitely consider. The fexon 454 tbi wiring harness is made for wide application,sssss It is durable and has a simple design. Make sure this fits by entering your model number. The universal wiring harness kit with extra long wiring is fitted to most vehicles. 21 wiring harness circuits are capable of all kinds of wiring connections.

Finally, the fexon 454 tbi wiring harness is perfect for a project that does not use all the power options.

• This is perfect for an instruction manual, It comes with explicit instructions and has an excellent design.
• This features lower eccentricity and resistance, performs excellently in electrical conduction and is reliable in usage.
• This has connectors, it is made with copper wiring and has a safety design.
• This comes with a safety leak-proof design to assure usage.

Best For Hot Rods: Vesen 454 Tbi Wiring Harness

Buy on Amazon

Compared with other harnesses in this category, the Vesen 454 Tbi Wiring Harness has a convenient design. The vesen 454 tbi wiring harness is great for most street rods, classic cars and, hot rods. Manufacturer says: Each of our products comes with a detailed specification, specific to each thread. This wiring kit features a thick coating over the copper wire.

The harness is highly recommended and also includes detailed installation instructions. Above all, the vesen 454 tbi wiring harness comes with detailed instructions and has specific pages for gm, ford and mopar.

In short, buyers found this to be one of the best harnesses for daily purposes.

• 【Package included】: 1 x 14 circuit wiring harness kit as the picture showed.
• 1 x 14 circuit wiring harness kit as the picture showed.
• This is perfect for almost any car or truck project.
• Wires are extra long to help accommodate whatever building you are working on.