I was tried to change background speedo light to LEDs. I bought 2 x #74 LEDs along with 2 new bases, I pull those stock bulbs out and insert LED with new base, nothing. I then rotate the socket (WITH the bulb in it) 180 degrees and re-installed, nothing!!! So, i giveup and reinstalled stock bulbs back, NO illuminate!!! Now the shifter and 4WD nob light were out too!!! Is there any fuses for these light bulbs?