Ck fuse box ck freon evre thang working in side but no power to compresor
My first guess would be the low pressure switch. It gets power from the relay.
SOURCE: A/c compresor quit blowing in
2006 Dodge Ram 2500 Diesel 5.9 Cummins
There is no relay. The pressure sensor sends signal to PCM, then the PCM sends signal to the TIPM or total integrated power module which is sort of self contained fuse box but really a micro computer that controls many things. The Module has had known issues that can affect one of many things. I lean to bad module. Here is the diagram for compressor. 
The Integrated Power Module (IPM) is a combination of the Power Distribution Center (PDC) (1) and the Front Control Module (FCM) (2). The PDC mates directly with the FCM to form the IPM. The PDC is a printed circuit board based module that contains fuses and relays, while the FCM contains the electronics controlling the IPM and other functions. The IPM is located in the engine compartment, next to the battery and connects directly to the battery positive via a stud located on top of the unit. The ground connection is via electrical connectors. The IPM provides the primary means of voltage distribution and protection for the entire vehicle.
The molded plastic IPM housing includes a base and cover. The IPM cover is easily opened or removed for service access by unscrewing the cover retaining nut and has a fuse and relay layout map integral to the inside surface of the cover. This IPM housing base and cover are secured in place via bolts to the left front fender support assembly.
Replaceable components of the IPM assembly are broken down into the following components:
All of the current from the battery and the generator output enters the integrated power module via a stud on the top of the module. The integrated power module cover is removed to access the fuses or relays. Internal connections of all of the power distribution center circuits is accomplished by a combination of bus bars and a printed circuit board.
SOURCE: My ac and heat not working in 2005 Dodge Grand Caravan
There may be a fault in the control group in the dash--there is a resistor that controls motor speed as well as the speed switch.
SOURCE: 2004 dodge heater blower motor dead. Motor,fuse. relay ck good
most likely that is the problem
SOURCE: 1996 dodge neon when hits bumps losses electrical
you might want to check the main wiring harness on the firewall and make sure it is plugged in completely and is tight
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