I doubt its there because i always assumed if it had one i would be able to hear it cut on when i turn the key. I could be and am probably wrong

 

No, you're quite correct. You can hear the solenoid clicking on and off quite clearly. I don't know about anyone else, but my voltage also drops as it cycles. Does the same on my 98.5.

 

If that is the case then it is missing in action! I have been pricing them, for everything including the chord its about 40 bucks so thats not bad.

 

Goose 1991 are u talking about the block heater or grid heater?

 

Well i just got it home, it ran great all the way down here. It seems though as if i have run into a problem. Once i cut the truck off and try to start it back it acts as if the battery is dead. The previous owner "said" it had a new battery and alternator. I was wondering if maybe there is a bad connection somewhere? The meter in my truck when the key is on is not even showing ten

 

Here is a little light reading that might get you started:

http://www.genosgarage.com/TDRBuyersGuide2009.pdf

and

Dodge Cummins Diesel Truck Accessories – Geno’s Garage

Also you might want to check this out, step by step procedures for a lot of the things you might want to do. Used it again yesterday myself.

FAQ/Knowledge base "How do I...?" Look here first! A.K.A. "The Sticky" - Dodge Diesel - Diesel Truck Resource Forums

Oh and I was Ford everything till I bought the 96 2500, never missed it and sure as hell won't be going back.

 

Thanks for the links, i really need to study up on the cummins But my blood still runs blue and sometime down the road this engine will be in my 1974 Hi-boy