jumped freely in the packaging in plastic sleeves after receiving and opening the glow plug set. should be 0.8-2 ohms. We also had an occasional stall issue using their valve cover gaskets. The truck ran great prior to using this kit, except for the hard cold start issue which I still have, but the truck never stalls at traffic lights, idles in the driveway or when we push the button to roll down the window . The truck stalled 4 times randomly in the first few days of use with these seals. I have requested a return and replacement hoping I received a defective kit and will update my review once we receive new parts hoping they are in good condition. Update: 6 out of 8 glow plugs have failed in the last week. . I'm not sure why they fail