Believe if you check your fuse boxes in your car manual it should provide you with the whereabout of of your resitor and fuses which run the fan. I did the same with my car and ubfortunateoy all were good except for my blower motor which was found to be no good. Costly but better to have heat and a/c than nothing to clear fogged windows, cold and heat.
Fuse is blown.
it is probley not the blower switch. if your fan runs on 3,4 and 5 it is your blower motor resister.
The daytime running lights module on a 2000 Grand Marquis is located in the passenger side engine bay. It lays between the battery and the heater blower.
trying to locate ,the resister to the blower motor foe 2003 grand prix gt
where the starter located on a 1997 grand marquis
This website might be helpful.www.dodgeparts.com/
The resister is right behind the glove box.
blower relay located on the engine compartment by the firewall
Transmission
Take it to a repair shop.
blower motor resister is bad
The relay is located in the engine compartment to the right of the heater hoses if you are looking at them. It dose not look like a regular rely. It has a connector that plugs into it.