just installed some fogs in my car and they worked for about 4 hours now every time i switch them on they blow a fuse, it came with a 30v fuse so i bought some new ones and tried to replace them but all it did was blow that fuse. any help?

 

Check your grounds

 

yes, blowing fuses that often usually indicates a bad ground conn.

 

Alright so I checked my grounds and they seemed all good, I dont know if this would be the problem but when I got in my car that night of the install the light on the switch went out i'm thinking maybe that's where the problem is.

 

if ur popping fusses it is a short to ground. not a ground connection.. trace ur power wire in the fog light harness. u have a power wire grounding out before the lamps causing a fuse to blow.. and a 30amp fuse?? way to big. a 15 maybe at the most. find out wherever they access power and follow and ull find it