American Autowire 510760 Highway 22 Plus Universal Wiring System

American Autowire's Highway 22 has long been the flagship universal system for wiring high-tech, high-end custom vehicles.

To this point, they’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.

They’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!

Their 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.
• They’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.
• They’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.

Full Vehicle Schematic Instructions (PDF)

Alternator and Main Power Connection Kit, Various Applications (PDF)

Main Power Panel (PDF)

Steering Column Turn Signal Connection Kit (PDF)

Headlight Switch Connection Kit (PDF)

Gauge Connection Kit (PDF)

Accessory Connection Kit (PDF)

Alternator Connection Kit (PDF)

Ignition Switch Starter Connection Kit (PDF)