Every AutoTech Engineering unit is assembled 100% in Riverside, California. With over 100 years of combined, “on hands” experience and the fact that we have been in business for over 28 years has allowed us to source and supply the highest quality component parts to ensure your unit exceeds expectations. All are plug and play unless over wise stated. Some modifications such as adding spacers or plug harness are included at no extra cost. Voltage is set to OEM minimum specifications on each unit ordered unless otherwise requested. If you need higher voltage, contact us before ordering online.  NOTE: IDLE RPM WHEN IN GEAR MUST BE MAINTIANED ABOVE 650RPM.  IDLE OF 600RPM WILL PRODUCE VOLTAGE DROP SO YOU WILL NEED TO TUNE IDLE RPM TO REQUIRED SETTING NOTED ABOVE.