Looks like I have an electric problem that prevents my A/C from working. When I press the A/C button, the light comes on but the compressor is not engaging. I use to have this problem on and off last summer but now A/C never works. Bizarrely, when I press off the A/C button and leave the fan on, my engine start running faster (like it should do when you put the A/C on !). My A/C was repaired last year(new compressor, new condenser). My mechanic sees no problem with the A/C itself and refers me to an electric shop for an electric check of the A/C and fan circuits. Did someone had this problem and can clue me on this?