So the other day i got a HU from a buddy of mine and i decided to install it myself everything works but ran into a few problems i cut the stock harness all off the cd player works but it sounds really low when i turn it up all the way also my dash lights to the speedometer don't turn on anymore i found the wire that leads to it but when i turn on my headlights the dash lights turn off my supra has been out for like 2 weeks need help anyone