Well as I have posted, NORMALLY its found in the fixed section of the lower section of the fixed fan shroud, passenger's side on left hooker . Remove the grill to expose it!
BUT beware !!!!
Take squint through the grill and sees if there are two condenser fans or NONE!
If there are just big round gaping holes where fans might have been, then
because its a 3500 the MAIN engine cooling fan will be electrically coupled.
It serves as both engine and condenser fan cooling.
So NO relay on these model derivatives
With these particular derivatives, if you leave the engine idling and the A/C operational the compressor head pressure will signal the engine cooling fan to mysteriously start coupling like a Boeing at take off when pressures exceed 350 psi .
Then it will mysteriously shut down once pressures are reduced to about 200 psi or so
Just like a Landrover !!!
I suppose emulation is the finest form of flattery!!
Dennis