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 14.8v in order to bypass PCM.  A plug harness is included.  For dash light removal, go to our technical help section of our website and go to our youtube channel to look up "pcm bypass dash light" for a FREE instruction in turning off the dash light thay may pop up.