I bought some amber-74 LEDS to replace the five original 74 bulbs that were in there as one was burnt out anyways. I put them in and went to check how they looked. But now only the one that wasn't working before is working, so only 1 out of the 5 are working. Is there an incorrect way to instal the LEDs into the holders? What could I have done wrong?

 

I know from past experience installing leds in cars that it matters which way you put them in. You may have to take them back out and rotate them 180 degrees and reinstall.

 

most likely have them in backwards like above switch them around

 

^^^ what he said, has happened to me in other cars. Pulled the bulbs, rotated 180 degrees, worked fine.