Hi All, I am new to this great looking site! I have a 2001 HD 4x4 8.1 The 4 ways and blinkers suddenly stopped working yesterday after a long day of snow plowing, i did have the 4 ways on most of the day. The blinker indicators on the dash do not light up. All exterior light bulbs are good. Maybe the flasher relay but i can't figure out where the heck it is! Thank you for any help.