Feed the terminal through the spark plug boot, tighten the terminal a little, feed it back in..push it on the spark plug and you'll feel it click, should not come off anymoreSo last night I took the mustang out for its first drift session. Ended up doing 15 miles of drifting. But my right rear spark plug wire kept coming off. I have Ford Racing 9MM wires. Any ideas on how to secure it better? Thanks