Xtreme Duty Complete Wiring Kit

Description

K&R Performance Xtreme Duty Complete Wiring Kit

For decades, our Super Duty Complete Wiring Kit has been the preferred choice of leading chassis builders and racers across the country. Its simple design, proven reliability, and complete package have made it an industry standard. As race cars and electrical systems continue to evolve, racers demand even greater capability and durability.

Introducing the K&R Performance Xtreme Duty Complete Wiring Kit—our most advanced and rugged wiring system ever.

The Xtreme Duty system features a completely redesigned fuse and relay panel with upgraded relays and circuitry engineered to withstand the harshest racing environments. The updated switch panel includes a dedicated Fuel Pump Prime function along with Aux 1 and Aux 2 accessory circuits, all while maintaining the same compact footprint as our popular Super Duty system.

The switch panel and fuse/relay panel are connected by a simple plug-in cable assembly, dramatically reducing wiring complexity and installation time. This design eliminates the clutter of traditional switch and relay wiring while creating a cleaner, more professional installation.

Additional convenience terminals on the rear of the switch panel provide easy connections for gauges, push buttons, gauge lighting, interior lighting, grounds, and other accessories. Like all K&R switch panels, integrated rear-facing white LEDs illuminate when interior mode is activated, making nighttime operation easier.

Included Circuits

The Xtreme Duty system comes complete with color-coded, labeled GXL wire for:

• Ignition
• Fuel Pump (12 ga.)
• Cooling Fan (12 ga.)
• Water Pump
• Delay Box (14 ga.)
• Transbrake (14 ga.)
• Throttle Stop
• Pro-Stage
• Lights
• Starter
• Tachometer
• RPM Switch
• 2-Step
• Shift Timer
• Water Temperature
• Aux 1
• Aux 2

Additional color-coded wiring is included for:

• Ground
• Air/Spring Shifter
• Neutral Safety
• Remote Start
• Crank Trigger
• Coil Wiring
• Alternator (8 ga.)
• Ignition Power & Ground (10 ga.)
• Main Power Feed with pre-terminated end (6 ga.)

Every Kit Includes

• Premium terminals
• Heat shrink tubing
• Wire ties
• Full-color laminated poster-sized wiring diagram
• Bolt-down inline 100-amp fuse for the main power feed
• Bolt-down inline 100-amp fuse for the alternator circuit

The result is the most complete, race-proven wiring system available—delivering unmatched durability, functionality, and value.

Electric Shifter Option

Vehicles equipped with an electric shifter will require the optional Electric Shifter Package, which includes:

• Ford-style starter solenoid
• Labeled 10 ga. shifter wire
• Bolt-down 100-amp fuse holder with 100-amp fuse

Dimensions

Fuse/Relay Panel

• Overall Size: 7″ x 5″
• Vibration Mount Spacing: 6.3″ x 4.3″

Switch Panel

• Overall Size: 8.25″ x 3″
• Mounting Hole Spacing: 7.6″ x 2.4″

Switch Panel Interconnect Cable

• Available Lengths: 8 ft. and 12 ft.