The electrical wizards here might correct me but aren't you supposed to unhook the negative terminal first then the positive? Also would a single filiment light or whatever work properly when there is 2 hot sources to the same wire? Would the power try to backfeed or something when both are on? Say you had the lights on and then turned the signals on, the bulb is already lit up why would it flash? Wouldn't you need a double filiment bulb like the tailights? Just asking for clarification.