I need to change the bulbs in my 97 6N, what is the fastest way to do it ?

Do I need to take out the battery etc ?

Will it do anything to the ANGLE of the light if all I do is replace the bulb ? Because I just got them adjusted to regulation.

Remove rear cover,take out bulb,put new one in,replace cover. Bit like changing the batteries in the telly remote. You do not have to unplug the telly or re-tune the channels.

I have been trolled,for sure.