Problem started when motor died going down road. After wigling wires under hood glow plug light came on and motor started.after motor died for a 5th time in 2 days I stopped the truck and it will not start again.motor turns over fine ,glow plug wait to start light will not come on.replaced glow plug relay and the wait to start light still does not come on.The motor ran great before this but I would have to turn on the" wait to start light" 3 times before actually trying to crank truck.

. Test all under hood and under dash fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-t...tml#post252145

. Read Item 7 on testing glow plugs:

https://www.askmehelpdesk.com/cars-t...ml#post1415281