I am stumped all of a sudden one day my wait to start light would never come on so from there on when i turn my key my wait to start light never comes on what could this be?

 

It could be the bulb in the dash. My high beam bulb burnt out one day. I was able to swap the Wait to start and high beam bulbs to check and see if it was a bulb. Sure enough it was. A new bulb and all was operating properly again. Easy to access as we'll. Pull the dash front cover off, and 4 screws hold the dash board in place. Trucks with autos have a gear selection linkage that rums down to the steering colom that HAS to be removed first. Hope this helps, and the fix is a cheap bulb!