Look on the firewall on right side of engine a circiut block of 4 wires is connected to fuse box behind the battery the other sid eof block connects to fuse box inside van ... Astros tend to burn up a connector or two on this block stopping power from getting to all the circuits...lights horn fuel pump relay..... some times you can clean it enuf to get home , but go buy a new one and fix it right so it don't strand you