Electrical problem
1994 Ford Falcon 6 cyl Two Wheel Drive Automatic 180000 miles

I am changing the plugs and damaged a plug lead, bought some new ones but can not get at the area to connect the new ones. Is this a job I should be able to do (fit the new leads) or do I need help. I cant get at the area the plud leads fit under the air cleaner etc. What do I have to take off