1999 Dodge Derango ,Blue Moons wont start

truck runs grate,will cruse 100+.But for no ryme or reason,wont start every so offten.Usuly two,fore,six months.Ata gas station ,after short orlong drives, sitting

overnight,summer or winter.sometimes it will,when starting,at higer RPMs, hang on befor dying . THEN will start,sometimes an hourlater or over night ,once two days!

I’m having a hard time understanding exactly what happens when you try to start the truck. Please clarify.

Sometimes, this has been found to be the ASD relay, The horn relay and the ASD (Automatic Shut Down) relay are the same type of relay. They are located in the relay box under the hood. The horn relay is little used. Swap these relays.