Refer to your owner's manual on how to use the key ring remote to turn the horn alarm back on. If you already tried that and it still wont work, pop your hood. look down to your right, by the driver's side headlight. there is a black plastic piece that kind of looks like a snail's shell, round with a rectangular hole coming out of it. is there a wire connected to it? there should be one attached by a clip. if there isnt, see if the wire will stretch to the metal tab sticking out of that plastic piece. if it makes it by at least a half an inch, strip the wire of the rubber and bend the raw wire into the hole in the tab, and wrap electrical tape around the entire tab and make sure yo do it VERY TIGHTLY. it absolutely has to be water tight.
Try PAINLESSWIRING.COM
This website has a lot of wiring for many cars including '92 Eclipse. http://www.modifiedlife.com/1992-mitsubishi-eclipse-car-audio-wiring-diagram/
The wiring diagram for the fog lights of the 2001 Mitsubishi Mirage can be found in the maintenance manual. It can also be found in the repair manual of the car.
for a stereo? go to the12volt.com
I would Invest in a Haynes Manual.
go to __the12volt.com __aojedam
http://www.installdr.com/Harnesses/Mitsubishi-Wiring.pdf
http://www.the12volt.com/installbay/stereodetail/1541.html
You can find a wiring diagram for your 1988 Mitsubishi Gallant at most Mitsubishi dealerships. Mitsubishi service manuals will have the wiring diagram and can be found at most local libraries.
haynes or palmers service manuals at autozone,advance auto, or Orielly's
You can buy a Haynes manual at Autozone. There is wiring diagrams and other trouble shooting things in the book.
go to installdr.com to see how to remove and install a stereo out of any car