help electrical problem!

Go here and download yourself a shop manual:

http://www.forabodiesonly.com/mopar/showthread.php?p=1970088617

Check socket grounds

Check all bulbs in park and tail sockets. Make sure they are the right part number and do not have an internal short

Do you have any reason to suspect the harness has been hacked up, or pinched or melted somewhere? (previous short, etc?)

When you say "no hazards" do you mean that all four EXTERNAL laps flash as normal and stop when the headlights are on? what happens if only the park lights are on?