My power mirrors stopped working recently, and i believe that i blew the fuse. I dont have an owners manual. if i could get which fuse i'm lookig for, that would be a great start. i have a 99 F-150 supercab 4 door with a 5.4 liter. thanks

 

You can download a owners manual for your truck here.

http://www.motorcraftservice.com/vdi...&menuIndex1=48

 

I dug through the manual. It doesn't list anything specific to the mirrors other than fuse 4. I pulled that one out and it's intact....

 

Fuse 4 is the only one for the mirrors.
I've replaced quite a few switches.

 

is there a check to see if it is the switch, or blown motors?

 

Just to be sure, you're checking fuse #4 in the central junction box (inside) not #4 in the battery junction box (under the hood). The workshop manual also says to inspect fuse #23 in the CJB for some strange reason (10 amp).

If you end up removing the door panel to check the power mirror switch, you should also check the wiring bundle that runs behind the speaker. Here's a photo gallery to illustrate a problem others may encounter with any electrical component that has wires through the door:

https://www.ford-trucks.com/user_gal...&albumid=20682

In my case, the door locks fuse failed randomly.