See what happens is that when I test all the connections and wiring the lights

work fine I even leave the car running with all the lights and accesories on and nothing happens, as soon as I take it for a ride maybe 5 to 1o mins later it blows a fuse. What I dont understand is I could leave it standing with all the lights on and nothing!! Its driving me nuts. Ill try taking a look at the fuse box to see if I have a bad connection