Maybe someone can help me now... I just installed factory fog lights in my 2004 3.8 v6 stang. Did them myself and followed directions to a T....A few days after(about 3) as i was a block from my house listening to Bloomberg Radio ( i say this so you know i was not blasting my subs and interior speekers) my aftermarket face plate turned off and i couldent get it back on. I had this system for a few years not with zero problems. When i got home one min later i turned my car off and back on. When i turned it on it sounded like it was struggling to turn on and almost stalled. Tried that one more time and it did stall. Besides for that my guages bugged out and when i turned the key to the on position with out going all the way, the guages shot to the furthest positions that each one could go then back again to flat then adjusted to the appropriate levels. I trouble shot and found that a loose conection from the fog light hook up onto the fuse box where the battery and alternator hook up. the nut that was supposed to be pressing the wires together was not all the way compressed and that nut and bult was extreamely hot and melted part of the fog lights little wire. My free tow to the dealership ended up in a dead battery because the guy didnt take my key off the on position. So today i got a new battery optima yellow top (thought it was a good time for a $200 upgrade) and made sure the all my fog light and other connections were tight. The nut and bult connection was no longer getting hot so i started the car back up. The problem now is the guages still bugg out and do the same thing and the car still sputters at first for a second or two when that happens. When the car gets warmes up i turned it off and tried it again and the guages and start up was ideal. Waited a little while and tried it again and the same thing happened. please help me avoid the dealerships 98 buck diagnostic test. what do you think is wrong?

 

Take it to advance and ask them to run a diag (it should be free it is here) it might be a code or something good luck man!