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sounds like your blower motor has stopped working check for power going to the blower system if you have power the blower is probably bad the concern is the lack of a fuse blowing or a breaker not cycling you may have a harness problem sometimes a low grade short will heat up wires then melt them together causing a multisystem failure even though a fuse or breaker didn't blow check you harness
The fuse box is were the flasher goes and that is considered the fuse block module. If your flashers are not still working, have you checked the switch itself? It could also be a bad ground connection in the fuse block.
Roger it sounds like the blower motor is not comming on. There is a resistor network located in the engine compartment on the passenger side mounted to the firewall, that controlls the blower motor. The connections may have corroted or the unit itself is bad. That was the first thing I had to relpace when I got my used 92 Dakota. There is also a 30 amp fuse in the fuse box under the dash board . If that is blown I would suspect the blower motor is seized up or just pulling too much power.
First thing to check is the fuse. There will be one under the hood and another in the interior fuse box. The 2004 model does nt have a relay. If the fuse is good, you need to check to see if the blower motor is good. The motor is located under the glove compartment area of the dash, near the firewall. Disconnect the harness from the blower motor, and using jumper wires, apply voltage directly to the blower motor contacts. If the blower motor works, then the switch is bad. If the blower still does not work then the motor is bad.
The blower motor resistor is located inside the HVAC duct, (heating,
ventalation, and cooling) on the passenger side footwell area. It is
accessed from inside the passenger compartment.You can test it with a
multimeter to see if it is open. it looks like this when removed.They
are about 33.00 from rockauto.com. When you find the connector on the
duct that is connected to this resistor block, remove the connector
with a small screwdriver, you have to find the lock tab and gently lift
it up and pull on the connector to remove the connector. remove one
screw and it will come out. most times you can tell if they are bad by
looking at them. if you cant test it have someone you know that can do
it. I am 99% positive that that is your problem, Unless the connector
came loose. Please let us know if this was helpful as i strive to
improve helping others on a daily basis.
The blower motor is on the passengers side under the dash.There is a blower resistor module that goes bad.It controls the blower speeds and blower operation only.I believe this is your problem.I am not sure if you can get this at any parts store.You have to get it at the dealership.Hope this helps.Good luck.