cucvrus
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Those are the ballast resistors that are mounted on the firewall behind the air filter. I will get you a better reason as to why I retain them on my trucks but all I can think of is because they worked for the past 35+ years and yes, I have had glow plugs fail at times. I corrected the issue and moved on. Good Luck.Now that the issue appears to be resolved, can anybody tell me why there are hotwired cherry bomb baffles screwed to the airbox?