In cavity 1, the 30 amp fuse has no power with key on? A wiring diagram shows that fuse gets power right from a wire from the ignition switch, with key on.
Wiring diagrams here: http://www.bbbind.com/tech_database.html
You just have to agree to license agreement, go to "technical information". To TSB's and wiring diagrams: enter year, make, and model-make sure you are on wiring diagrams, not tsb's, then pick the diagram you want to look at. Every wiring diagram on your vehicle is available.
Rate if this helps you. Always appreciate a reply.
SOURCE: 98 dodge ram 3500 no heater blower
check your fan speed resisters usually located in the engine compartment
SOURCE: Blower motor stopped working
most common is the blower motor resistor or "module" going out. but if you have 12volts to the resistor the motor should work on "HI" but not on any other speed. if it doesnt work at all, you might have a bad motor. just to be safe id replace both. neither one is too hard to replace. three 5/16" bolts for the motor and two 5/16" for the resistor they are both under the glove box
SOURCE: 1996 Dodge Dakota A/C ...plus blower motor problem
You may have 2 problems - the blower motor I believe should have power all the time and the speed is controlled by grounding the circuit through the various resistors. I think you need to get some wiring diagrams.
SOURCE: diagram for 2005 magnum\r\fuse blocks
Here's a link to the owners manual free download. Simply put year and model in and it will bring up your manual.
Fuse block information begins on page 307 and ends on page 312
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