Hi I have a problem with the rear columns a few days before theyfreak out and now draw no bet but if you just put the radio in the 1st toplay as before but if you disconnect the 1st other did not play nice and if you put these 2 together and ovelicha begins to sizzle. Wires are sparking and columns are connected properly. If anyone can helpI would be very grateful. my radio is sony cdx-gt430u