It's probably a short in your system but it very well could just be your fuse.
most likely bad switch
Blinking headlights can be caused by various factors, including issues with the Daytime Running Light (DRL) module. If the DRL module is malfunctioning, it may cause the headlights to blink unexpectedly. However, other factors like faulty wiring, bad bulbs, or a failing switch can also lead to similar symptoms. Proper diagnostic testing is needed to determine the exact cause.
Turn on the headlights and walk to front of car and see if both headlights are on. Make sure to check both the high beam and low beam head lights. I believe that the blinking light you are seeing is to tell you that one of the headlight bulbs is burnt out and needing replacement. That's the Daytime running light indicator. Check that they are working.
Which light? Is it the dome light? the headlights? the little annoying blinking one next to the radio? I might be able to help.
Sounds like a very weak battery.
Maybe a "dead short" in the system and the auto resetting breaker keeps tripping. Disconnect one at a time to see if problem is in one side or the entire feed circuit
first make sure hazard lights are not on.next you need to ckeck the grounds from the battery.
Yes, blinking is a behavior
Blinking lights on dash and exterior lights may indicate a bad ground wire or a faulty headlight switch. Both would cause those problems.
Normally the blinking on and off indicates there is a broken switch, broken wire, or a piece of bare wire. First, I would test the switches.
Generally, a blinking DRL indicator on the dash means that there is a headlight burned out. Replacing them is cheap and easy.
it means that either your keys are still in the ignition after you turned the car off, or your headlights are on, or you need to shut the door or trunk for it to stop blinking but wont ever go off