american Autowire highway series
shop our american autowire compliant cars
shop highway series products below
Highway 15 Plus Universal Kit
Since its introduction in 2003, the Highway 15 Universal Wiring System has been the perfect choice for tight spots in kit cars, roadsters and coupes. We’re exceptionally grateful to be part of so many builds, and have taken note of some suggestions from over the years to make a great product even better. 
Our goal with the changes in the Highway 15 Plus is to preserve the same feel as the original, with some modernization and ease-of-use improvements for both backyard and professional builders. With those thoughts in mind, American Autowire is pleased to introduce the Highway 15 Plus!
New features include:
- A built-in LED flasher to support LED turn signals without the need to purchase an additional item.
- A back up light feed and power wires to make the harness easier to install in a more modern vehicle.
- Improvements to our instructions to cite a wider range of examples and real-world scenarios. The panel labeling has also been updated along with the above physical changes, including wording modifications for enhanced clarity.
- Our new high amp alternator and main power connection kit. This allows for the use of high amp alternators, and provides an even better level of fuse protection for the panel and charging system. This new connection kit utilizes 6ga wire and two 175amp Megafuses.
- Extra connectors and wiring to more easily support a 4-headlight system without an additional add-on purchase.
- Longer neutral safety wires for cars with console shifters.
- An additional ignition circuit to support aftermarket components.
- Improved ignition switch with mating connector and 4 additional accessory and ignition terminals. Uses a square GM-style key.
These original features that made the Highway Series the most popular wiring system available are still part of the new Highway 15 Plus:
- G-10 composite panel base measuring 4.5”L x 4.5”W x 3.5”H, and nylon 6/6 panel components.
- GXL/XLPE GM color-coded wire.
- Easy-to-read wire labeling every 3”-4”.
- Self-locking screw clamp interface.
- American Autowire’s signature gauge cluster disconnect.
- Ignition, headlight and dimmer switches are included.
- Full-color, tabloid-sized, step-by-step instructions.
Highway 22 Plus Kit
Our Highway 22 has long been the flagship universal system for wiring high-tech, high-end custom vehicles. To this point, we’ve seen and heard evidence of customers installing the kit in just about every make or model vintage (and some modern) vehicle, off-road trucks and even industrial equipment.
We’re exceptionally grateful to be part of so many builds, and have taken note of some suggestions from over the years to make a great product even better. With those thoughts in mind, American Autowire is pleased to introduce the Highway 22 Plus!
Our goal with the changes in the Highway 22 Plus is to preserve the same feel as the original, with some modernization and ease of use improvements for both backyard and professional builders.
The full list of new features is below: 
- Each kit will now include a built-in LED flasher to support LED turn signals without the need to purchase an additional item.
- We’ve added back up light feed and power wires to make the harness easier to install in a more modern vehicle.
- The pre-installed 20 amp relay can now be easily changed to function as either a keyed 12 volt or ground triggered item.
- We’ve improved our instructions to cite a wider range of examples and real-world scenarios. The panel labeling has also been updated along with the above physical changes, including wording modifications for enhanced clarity.
- The wiper circuit has been upgraded to a 20 amp fuse to support all aftermarket wiper systems. This has been made an accessory circuit for more adaptability.
- The AC/Heat fuse has also been moved to an accessory circuit to eliminate draw from the blower motor while the vehicle is being started.
- All kits will feature our new high amp alternator and main power connection kit. This allows for the use of high amp alternators, and provides an even better level of fuse protection for the panel and charging system. This new connection kit utilizes 6 ga wire and two 175 amp Megafuses.
- Extra connectors and wiring have been added to more easily support a 4-headlight system without an additional add-on purchase.
- Longer neutral safety wires for cars with console shifters.
These original features that made the Highway Series the most popular wiring system available are still part of the new Highway 22 Plus:
- G-10 composite panel base measuring 7.5”L x 4.5”W x 3.125”H, and nylon 6/6 panel components.
- GXL/XLPE GM color-coded wire.
- Easy-to-read wire labeling every 3”- 4”.
- Battery and accessory power expansion via heavy duty power studs on the panel.
- Self-locking screw clamp interface.
- American Autowire’s signature gauge cluster disconnect.
- Ignition, headlight and dimmer switches are included.
- Full-color, tabloid-sized, step-by-step instructions.
 
Highway 15 Nostalgia Kit
The Highway 15 Nostalgia is the retro version of our popular 15 circuit universal kit. It packs the same features as the standard Highway 15, but includes 50’s inspired braid and lacquer coated wire. We still use our standard high temperature GXL wiring underneath, but the high gloss finish and textured wires are the perfect touch to finish a period correct hot rod.
The Highway series was developed to handle the most demanding power requirements and accessories. With the Highway 15 you have the most flexibility in fuse box placement, and the freedom to customize your vehicle however you like. Each system comes with complete, easy to understand instructions, all the necessary wiring to construct a complete chassis harness and the most durable and adaptable fuse panel in the industry.
Power is distributed through stout 6 gauge buss bars, and self-locking “Hooke's Law” clamp connections make sure your final terminations stay in place for the life of the car.
The Highway 15 is a brute in a small package. Built with the same heavy duty internal components as those used in our Highway 22 panel, it can easily handle the basic power requirements of any vehicle. Its size makes it the perfect power center for roadsters, T-Buckets, kit cars, race cars or any other vehicle where basic operational circuits are required.
Additional Features Include:
- Ample lengths of vintage-style wire
- A 175 amp MegaFuse for system protection
- Built turn signal and horn relays
- Gauge cluster disconnect system
- Headlight, ignition and floor dimmer switches
- GM style steering column connection kit
- Accessory sub harnesses for wipers, heat/air conditioning and radio
- Complete installation instructions
- The best technical and product support in the industry
Panel dimensions are 4.5” L x 4.5” W x 3.5” H