It is rarely installed from the factory. Normally you have to buy it from the dealer and install yourself.
pasenger side wheel well next to the filter on the block. small circle plug
Yes
its behind the right hand front tire next to the block!!
The cord, if equipped runs along the passenger side of the engine. The cord had to be bought at the dealer and installed. It wasn't built with it.
right next to the block and heads
Yes.
Driver side of the engine block.
No, the Cummins uses an intake heater grid.
Driver side of the engine block.
It is part of the filter on the driver side of the block.
If it is the Cummins diesel, it is on the drivers side of engine block.
The heater housing is behind the dash on the passenger side.