NOS 15982NOS 2-Stage WOT/RPM Activated Window Switch with Shift Light Control Bright or Easy To Read Display; 2 Stage WOT/RPM Activated Window Switch; with Shift Light Control Live RPM And TPS Readings Recall Feature To View Maximum RPM And TPS Voltage 2 Fully Programmable RPM Window Switches Easy Adjustments; no need for RPM pills