1999 honda bad relay switch somewhere under driver side.i am 70 but i know this is easy. and i can do it. It's a green panel with a silver switch in the middle but I don't know exactly where it is and how to get off.

SOURCE: ac not working

I had the same problem with the over temp sensor on the compressor. I had it repaired at the dealer for $200.00 plus. I just had the same problem reoccur. This time I bypassed the switch myself.

There is a small wire harness that runs from the compressor above the radiator, inside there are three wires. After determining which ones to jump " two smaller gage blue" the AC system works fine in all modes.

Thanks "Guset"

SOURCE: removing inside door panel from drivers side of 1999 honda civic

two philips screw on the handle ( the one u use to shut the door), one on the far right handside in the middle, one in the other handle ( the one u use to open the door with), after u removed all the screws, put a flat screwdriver at the bottom of the panel and pull it off.

SOURCE: 1999 GMC Suburban DRL Work - Headlights/Highbeams Do Not

go to autozone the can help you if you have one they do a lot of things fore nothing including clearing codes

SOURCE: 1991 Honda Civic DX Location of Fuel relay switch

in the fuse box up by the firewall on the drivers side .... fuse 13 fuel injector relay is the only fuel related fuse/relay that i could locate.fuse 9 in the passenger compartment fuse box as well.... what size motor is in your car ?

SOURCE: can some post the 1999 gmc sierra wiring diagram

you don't have enough pressure in your system. odds are you have a leak someplace and the factory installed a saftey switch to keep the ac from running when there is no pressure. This way you don't end up burning up your compressor.