My wife's 2001 Durango has electrical problems. The radio, inside lights, and garage door opener are all out (that's all we've noticed so far). The fuse for the radio is fine, but the one for the interior lights was blown. I replaced it and the new one immediately blew. Does anyone have a good guess as to where to start to track down the short? Or should I just get a box of fuses and start hunting? Any ideas will be appreciated.