Just a question for you guys. I'm looking to start doing all of my bike repairs myself and with still not being familiar with the location of everything on bikes, I'm just wondering. I know the spark plugs are in the cylinder heads, but do you have to take the top of the heads off to get to them? Or do you just pull out the black cable running into the head and have access to the spark plug that way? Just for reference, I've got a '79 CX500 Custom.