Requires No Cutting- Drilling Or Modification To Factory Pieces,Inclu. Universal Wiring Harness/ Sending Units For Water Temperature Etc.,12.3 in. LCD Display with Four User Selectable Screens,Equipped with Removable Air Conditioning Vent Block-Off Plates,User-Selectable Fuel Level Resistance Ranges Designed For OEM/Aftermarket Sending Units,Helps Identify Potentially Serious Vehicle Issues With Visual And Audible Alarms,Speedometer Easily Calibrate Sensors/ Tachometer Is Capable Of Calibrating To Many Engine Types 1-12 Cylinders,Display Output Is Programmable For Imperial Or Metric Measurements,Direct-Fit Instrumentation Solution,On-Screen Notifications For High Beams And Turn Signals As Well As Audible And Visual Instrument Warning