American Autowire Highway 15 Plus Universal Wiring System

Since its introduction in 2003, the Highway 15 Universal Wiring System has been the preferred choice for compact installations in kit cars, roadsters, and coupes. American Autowire deeply appreciate being a part of numerous builds and have attentively considered suggestions over the years to enhance an already exceptional product.

Their objective with the Highway 15 Plus is to maintain the original essence while incorporating modernization and user-friendly improvements for both DIY enthusiasts and professional builders. With this vision in mind, American Autowire proudly presents the Highway 15 Plus!

Key new features include:

• A built-in LED flasher supporting LED turn signals without the need for an additional purchase.
• Backup light feed and power wires for simplified harness installation in modern vehicles.
• Improved instructions covering a broader range of examples and real-world scenarios. The panel labeling has been updated, accompanied by wording modifications for enhanced clarity.
• The new high-amp alternator and main power connection kit allowing for high-amp alternators and offering superior fuse protection for the panel and charging system. This connection kit utilizes 6-gauge wire and two 175-amp Megafuses.
• Additional connectors and wiring facilitating the support of a 4-headlight system without an extra add-on purchase.
• Longer neutral safety wires tailored for cars with console shifters.
• An additional ignition circuit supporting aftermarket components.
• An improved ignition switch with a mating connector and four additional accessory and ignition terminals. Utilizes a square GM-style key.

Retaining the original features that made the Highway Series the most sought-after wiring system, the new Highway 15 Plus includes:

• 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.
• Included ignition, headlight, and dimmer switches.
• Full-color, tabloid-sized, step-by-step instructions.