My 2004 grand caravan the radio stopped working all the sudden then when I turned off the car I noticed that the dome light will not work now will the keyless entry. They do however work if the van is started. The van starts with no problem. What could be causing this

Any solutions to this as my car is experiencing the same symtoms.

My power door locks stopped working, Radio went dead and instrument cluster backlighting went out. What I did; Driver's side, engine bay, aft of battery is fuse block. Check all fuses, note fuse block legend - identifies fuses. With multimeter, check for current before and after all suspect fuses. Common on these vehicles is corrosion / breakage of wires on underside of fuse block at terminals. Make a temporary hot jumper wire (with in-line fuse rated properly for circuit) to input side of suspect fuse to see if that fixes things. If so, you will need to disconnect battery, replace harness or fuseblock or repair solder the bad connection (what I did). You should be able to find suspect wire fallen out of underside of fuse block. Just jumper it around to the correct connection point on top with the fuse and force the hot soldering iron into the slot in the plastic by the power blade. Test with meter that you didn't bridge anything else by doing this. Pull and wiggle on the wire to verify good connection. Re-insert fuse. Test. Have beer. Order new Fuse block now, not later (this, I did not do yet. - I had yet another beer, instead.)