Hello, I am using 12v glow plugs with a manual switch and was wondering if anyone could recommend a good but well built relay solinoid. The system is working awesome, no smoke what soever and I can leave the plugs on for 5 minutes easy without burning them out. However I do not think that the relay solinoid can handle being on for that long because it is starting to go out. Has anyone found a good one to use for this setup? Thanks.