Started car one day engine ran for about 20 seconds and just goes dead, no sound anything. Turn the key to start and hear a clicking sound coming from under the hood. Had a lock and the PWR/TRN relay fuse is making a clicking sound as well as the throttle body. Swapped over the relays and same clicking persists. There is another relay under the glove box clicking as well which is the RAP (not sure what that is). The radio/screen cuts out when i turn the key to start as well. Had an auto electrician look at it plus a mechanic and they have no idea what it is. JUst wondering if anyone has come across this same problem before and any ideas?