My 2000 Dodge Caravan 3.0 litre 3 door will not start. It will not even roll over. There are no lights on dash or other indicator lights. I had blown horn before turning off vehicle at which point completely dead. Could that have shorted something out ?
Most likely reason for your no start is from a dead battery. This would also account for the loss of any dash lights. May just be loose battery connections or corrosion. Check this first and maybe even wiggle the cables.
As for the horn being an issue, it may have had an impact. The horn button utilizes a relay that when activated sounds the horns. A sticking relay will cause a drain on the battery but usually will continue to sound. This is if it was functional in the first place. You may want to look over the wiring diagram to gain a better understanding.
SWITCH – removal and installation
The switch is molded into the airbag cover. The switch cannot be serviced separately.