Need to know location of blower relay to be able to repair car

Your best bet ,take it to a qualified repair shop before you replace a part that is not needed . Blower motor not working could be caused by a number of thing's . Without viewing wiring diagrams to see what all is involved in turning on the blower an then testing the electrical circuit's nothing should be replaced . Looking at the wiring diagram i see front blower motor relay , front blower motor , variable blower control module , front air controller . So ,if you start replacing parts without knowing , you'll spend more then taking to a qualified repair shop.

Where is the Factory Air Standard Relay located????? No such thing .Maybe you mean Blower motor relay ! Does the heat / A/C blower work on any speed ? Do you know what a wiring diagram is ? Looking at a wiring diagram to see what all is involved in the blower motor electrical circuit should be the first step in the diagnostic process . Then testing with a DMM - digital multi-meter .
http://www.bbbind.com/free-tsb
Then maybe you should watch a few youtube video's on how to test (trouble shoot )
Blower Motor Problems Auto Repair Help

Are there any hvac trouble codes ? Did you check voltage and ground for front blower motor, with controls turned on? I believe the purple wire is voltage and black wire is ground. If good voltage and ground with no blower action, suspect the blower motor.
With auto hvac didn't see relay, saw blower motor control processor, at control processor, did you check voltage and ground?
As far as replacing the blower motor control processor, that appears to be a very involved procedure. I can't lead you step by step to remove and replace.
Auto.com
Has free repair info, you have to register your vehicle, it is free. Then click on vehicle repair guides, take a look.
If you want wiring diagram, let us know?

Almost all relays are under the hood usually right side. There should be a chart in the cap saying what is what.

The blower relay is for high speed fan only most of the time . Do you know how to test electrical circuits ? It sure cuts down on buying unneeded parts . Here watch this video , this is a Chrysler vehicle . Don't know what you have , doesn't matter . They all work pretty much the same . I suggest you watch a few other trouble shooting videos as well .Is Chrysler Blower Motor Test subscriber requested video This next vehicle is a GM product , this one uses a relay for high blow only . Blower Motor Problems Auto Repair Help

It's amazing the car even runs. Reverse polarity on a car battery will usually fry the ECU, which is the computer that runs everything from the engine timing to smog control. Consider yourself lucky.
You must have had the Blower motor in the On position and tried to start the car after the battery hookup.
First start at the fuse for the Blower motor, which may be under the drivers side dash or in the engine compartment. (you did not specify the vehicle make)
If the fuse is OK, then the relay may be fried. relays are usually under the hood inside the big fuse/relay box. Look at the fuse/relay legend (map) inside the cover and locate the relay for the Blower motor. It may just have a 'fan blade' symbol. Exchange it for a relay of the same type and style in the same box. Put the 'new' relay in the blower motor socket. Turn the key to the 'On' position (just before 'Start') and test the blower motor. Turn the key off. If it worked, take the bad relay to a car parts store and buy a new one. It'll cost between $10 and $50. I know, doesn't seem worth it.
If that doesn't fix it, return the relays to their original position and go to the parts store and buy a repair manual for your year, make and model. Locate the section on Heat/AC and replace the Blower Motor Resistor. That's probably the culprit. Short of that, take it to the dealer or a good repair shop, that you trust. It can be an involved repair job.

you need a blower motor resistor not a relay

1. Does the Blower work on High (or #4) only? If so then it is not the Front Blower Motor or the Relay that is bad, but it is the Resistor which is located behind the Glove box. Follow step #a. below and take out the Glove Box to access. It has 3 to 4 wires going into it. The wiring path is: Switches to the Resistor and then to the Motor.
2. The Front Blower Motor Relay is located in the IPM - Fuse and Relay Center. It is located in a box within the engine compartment. However: (restated) IF the Blower does only work on High then this Relay is good and you should only replace the Resistor Only. The Identification and Location of the Relays and Fuses is located on the back side (inside) of the IPM cover. Remove the cover. The Front Blower Motor Relay is the same Type (size and shape) as several other Relays in the panel. Switch out the Front Blower Motor Relay with a non-engine operation Relay for a function that you know works. Recheck the operations of both functions. If the Front Blower Relay now works and the other function now does not work, it was the Relay was bad and needs to be replaced.
a. Disconnect the Negative Cable from the Battery and wait at least two (2) minutes to deactivate the Airbag Sensors.
b. Remove the Glove Box.
c. Disconnect the Electrical Connection.
d. Unbolt/Unscrew the bolts/metal screws and remove the Resistor.
Installation is reverse of above.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

I don't know if this will help but the fuse box panel under the dash should show you the location of the blower motor fuse and the relays are beside the battery. You will have to take the relays to a shop to be tested. Sorry I couldn't be more specific.

The resistor is located on the blower housing on the firewall under the hood under the relay center boxes.