A friend of mine has a travel trailer. We have discovered that he has a short that we cant find. We have done some internet research with no luck finding it. Here is some of the details so maybe you fine folks can help us. The camper is not connected to shore power. When we disconnect the negative cable from the battery and place a volt meter between the negative cable and the negative lug of the battery we get 12v. All of the posts that we found on the subject suggest that removing the fuses one at a time should indicate which circuit the short is on. After removing all of the fuses from the converter, we still have 12v. We have tried to disconnect each of the wires on the 12v load side of the fuses, with most of them off we get about 9v. Once they are all disconnected we have about 1.5v. Again most of the posts on this subject suggest that if "a fuse keeps blowing", none of the fuses are blowing. He tried removing all of the exterior light bulbs as well, strange suggestion but we thought we would give it a try as well. I am sure there are many other combinations of un-wiring and re-wiring that we have tried that would be too much to list. Any help or suggestions would be appreciated.