• 3/8 Inch NPT Service Rear
• 1/8 inch NPT Stop Light Switch
• 3/8 Inch NPT Service Front
• 1/4 Inch NPT Trailer Control
• 1/2 Inch NPT Trailer Service Supply
• 1/2 Inch NPT Trailer Emergency Supply
• 1/4 Inch NPT Tractor Protection Control Delivery