This happened to me too.
I was sure that all three wouldn't go out at once so the first thing I did was replace the stop lamp switch and dove into wiring.
New bulbs fixed the problem...
Is the compression too low to fire?
I had a 4.0 that at the end of it's life required a little help to get started some days. It entailed removing the spark plugs and pouring a teaspoon of oil in each cylinder and cranking with the plugs out. Next put the set of plugs back in and it would...