So my 1998 durango 5.2 has flashing headlights yet again..i replaced the pigtail and headlight switch along with the relay at two months ago..Well yesterday I went to start my truck and turned the lights on all i had was headlights no interior lights no rear lights and it would blow a fuse i believe it was the interior lights one..anyways I went and got a new headlight switch(the other one is only three months old) and thought every thing was good no fuses blowing so this morning i was driving for about 10 miles and my headlights started to flash on and off and repeat it self. Any ideas?

 

Just taking a guess, you may have to check to see if your CTM module is having issues.

 

How do I check it?what am i looking for?One thing i noticed is that it was been fine when its cold out, below 32 degrees but when i started having the issues it rained the night before and it was in mid 50's that morning.The switch is not hot so it has to be something other than the switch.