I just went on another road trip and prior to starting, I turned key and no glow. I pulled out my multimeter again and there was voltage at all points and all plugs were reading less then 1 ohms at the relay. So the plugs appear to be ok. After I got to destination, 30 min drive, I stopped and restarted and glow light came on. what gives? Do I just chance it and swap out the relay? Every time I check the voltage/ohms I notice the adapter for the ignition on the relay is very loose and easy to come off. Can it be as simple as a bad connection at the relay where the ignition wires connect? Is there any more troubleshooting steps I can take to prove that the relay is bad before buying a replacement?