Hi guys got a 2015 that has an amp and subs in the back that I think caused a problem maybe. I have one of those line level converters that I used by tapping into the back speakers for inputs into the amp. Anyways it worked great for 6 months but yesterday when the volume was up it made the whole car go crazy, all the dash lights went on and the trans was slipping, turn off the radio and it was OK. Happened twice and I decided I would just drive it to work with the radio off, well this morning it wouldn't start, so I put in a new battery. Still nothing, no lights or anything with the new battery, no break lights or horn, ....I mean DEAD. I checked the 100/70/30 fuse bars and both look fine. I am at a loss fellas, any ideas would be great. I feel like the line level converter sent power backwards to the radio or something and shorted something out or the battery was getting bad and the power draw from the amp did something. Im thinking its going to need a tow to the dealer?