I picked up a nice little deck on the weekend that had a USB port. I installed the thing only to smoke it somehow. It had a 10amp fuse on the deck itself and I also had another 10 amp fuse inline. The inline fuse got smoked but it didn't save the deck.
So before I go and try and buy another used deck and smoke it too, I thought I better figure out why this one got destroyed. The main difference from the stock deck to the new one is that the stock deck also uses the stock voltage converter for both memory and power. The new Sony deck I hooked up the memory wire to the stock converter and the ACC power wire to the aftermarket converter. The deck only has one ground wire, so I joined the grounds from both converters. There is a slight variation in voltage output between the two converters. The stock one puts out 13.94V and the aftermarket puts out 13.80V. Would the joining of the two grounds caused the deck to get fried?
BTW, I did re-install the factory deck and it works fine still.
So before I go and try and buy another used deck and smoke it too, I thought I better figure out why this one got destroyed. The main difference from the stock deck to the new one is that the stock deck also uses the stock voltage converter for both memory and power. The new Sony deck I hooked up the memory wire to the stock converter and the ACC power wire to the aftermarket converter. The deck only has one ground wire, so I joined the grounds from both converters. There is a slight variation in voltage output between the two converters. The stock one puts out 13.94V and the aftermarket puts out 13.80V. Would the joining of the two grounds caused the deck to get fried?
BTW, I did re-install the factory deck and it works fine still.