Truck Repair: 94 freightliner

Question
94' freightliner just shut off and don't start. Relay keeps shuting off and resets in seconds I try again and starts but shuts off instantly....no warning lights..4th day trying...please help!!!

Answer
Not sure if your talking about a relay or a breaker. Freightliner likes to use breakers which are the little shiny silver boxes. If that's what you got those breakers get weak and trip a lot when they get old what you can do with that is take out the breaker and replace with the same amp rating mini fuse. If you have a electrical problem then you'll blow that fuse.