the fender bulb in a YJ isnt a turn signal, its only a marker light.
it is a 194 bulb mounted in a rubber twist socket. a quarter turn takes the socket out of the light housing. reach up inside the fender and grab the white rubber that the wires are going into, turn it to the left( righty-tighty, lefty-loosey) a quarter turn and take it out. OR... you can take out the 2 screws that hold the entire light assembly in the fender and access the bulb that way.
it is a 194 bulb mounted in a rubber twist socket. a quarter turn takes the socket out of the light housing. reach up inside the fender and grab the white rubber that the wires are going into, turn it to the left( righty-tighty, lefty-loosey) a quarter turn and take it out. OR... you can take out the 2 screws that hold the entire light assembly in the fender and access the bulb that way.