The back wires are little tricky to get out due to lack of room.
Try using a spark plug wire removal tool (see diagram below). It can make it a little easier. You will still have little room to work with but it can help will pulling out the wires without damaging them.
Here is a helpful video:
I have included the replacement procedure for your reference.
Please let me know of any questions.
Images (Click to enlarge)
Friday, September 24th, 2021 AT 1:51 PM