Re: Changing front blinker bulb?
To change them is very simple.
If your mustang is a 99-04, pop your hood and where your headlight assembly is, you will see 2 metal pins. Pop them upward and out. Then unplug the headlights by simply pulling the plug (there will be two tabs to hold up on the plug to unlock it). Do the same for the blinker, and pull the headlight out. Then, to remove the bulb, twist counter clockwise i believe, and pull out. Insert bulb and all is well. Local autoparts store should have your blinker bulbs.