I applied the dielectric grease as shown in vid and it helped for the passenger side. They all "seemed" to snap on correctly, but it is harder to tell if they stay connected on the coil packs as the boot has a lip and they seem to creep off a bit. Anyway, i put them all on and started her up, but had a miss/hesitation when throttling up. Took all the damn wires off and put the old ones back on as they have a definitive snap/lock when installing. I have never had such heartburn over plug wires before. I am quite pissed at seemingly wasted time and money. If I hadn't try to modify them to fit better, I would probably send them back, but now they sit in a box until I have another full weekend to mess with them again. cheers