Sounds like a bad ballast resistor to me. As stated. Put the key in the run position and I use a starter switch as a jumper. Put one lead on big terminal of the starter relay and the other smaller screw with hex head slotted screw. It should start right up if it’s the ballast resistor is bad. Most carry those as a spare. They go out all the time. You can jump those two post with a screw driver or pair of pliers in a pinch. It just engage starter is all.