I have not yet had the dash apart on my 95 F150 to replace some burnt out instrument bulbs. Since I have to take the whole thing apart I am going to replace all of the bulbs. Can anyone tell me how many there are? I know these wedge style bulbs fit into a twist in socket is it a go0d Idea to replace them as well on general principles.

 

It wont hurt you to replace them all it seems like more work than you need to do though. Changing the bulbs wont wear out the sockets you would have to do it a thousand times.