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Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff
  1. M

    Archived Grid heater wiring

    Thanks for all your help! Ill check the heater itself today with a ohm meter like you suggested. Ill also leave the heater unhooked and hook up the relays to see if I can get them to come on. Last time I checked them I was in my shop so the ambiant air temp was probably warm enough no to switch...
  2. M

    Archived Grid heater wiring

    Thanks much for the info! Yes the 40 amp that is blown feeds the fuel heater. Im guessing this is a separate circuit all together? Will any of the 4 18 gauge wires to the relays have 12 volt through them? Did the relays sticking on cause the heater wires to melt? If so looks like ill be...
  3. M

    Archived Grid heater wiring

    Ive searched the forum with no luck. I have a 99 3500 cummins that has had a wire melt down at the grid heater. It blew the 40 amp fuse that powers the relay. I unhooked the 2 big melted cables from the grid heater to diagnose the problem but dont have any power down to the 2 relays on the inner...
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