Hi,I have a 1994,and never had to change the cables,take a multimeter,if your cables read less than 11,000 ohms they are perfects;my cables read #1= 9.5K #2= 8.5K #3= 5.5K #4= 4K,and I check the new Set [standar]in the Auto Parts,and they read more ohms than my old ones!!.Less than 1K ohms cables can give you problems with the Radio,Computer Sensors ect.But Back to take out the cables,release the grommet from Valve cover, try to rotate a little,and pull hard,the cable go direct to the Sparkplug,so no problem to brake nothing.
but the thing is when i install them they go in fine no problem, but after running it hard a couple of times, i tug on them, and it is as if the part that clips on to the plug closes tightly and doesnt let go, its happened once to just 3 wires, and now that im trying to change them its the same thing, only one comes off without a problem, and the other 3 are hard to come off.
I had the same problem in my 1st KA. Buy some better spark plug wires for one,suggest you go woth NGK or Nology wires.2nd make sure your engine is good and cold when you get ready to take em off.And I also suggest you use apair of channel locks to take em off for better grip.