I have bought my first Apexi AVC-R 5 years ago and have always been happy with it but my dash unit screen has refused to light-up few weeks ago so i have it checked by an electronic technician. He told me that problem was on the screen so i have bought another complete unit new. The new dash unit was plugged to my existing harness but the scren hasn't light-up either. The problem was found to be caused by a harness connector wire that was disconnected in the engine bay connector going to the boost controller solenoil. It should be a safety device to close the dash unit when there is a connection problem in order to protect the engine when a connection is defective. I should now sell the new AVC-R that was never used except it has helped me to find out the problem that i had with my old one. The warranty is provided by Apexi so it will be valid for one year. Pics are available upon request which will show original packaging too. Your gain is my lost Check this link for info on product: [ [ http://www.apexi-usa.com/product_electronics_detail.asp?id=200&pageNum=1 ] ] Thanks for reading and e-mail at alain.nadeau26@sympatico.ca