Over the last couple of weeks everytime I hit a bump my radio cuts off, thought it was the radio that was installed because you could tap the front (flip down face)and it would shut down or lights on it wouldn't work or i'd get funny hyroglyphs. So I purchased a new radio and got rid of all the wiring mess the PO had in there. Now however, I still get the radio bump shut off whenever I go over a large bump in the road. I thought it was the fuse box or my drivers door having a short, because I used to have to slam the door to get the old radio to work if it shut off. Its a weird shorting issue i'm hoping someone will have had before and can relate a fix. I've been trying to trouble shoot by removing the panels and jiggling wires and banging on the dash and doors but so far nothing is working and it still shuts off for about 2 sec. and comes back on when I hit a bump in the road. When I got the bronc last year I replaced all the hot and grounds on the engine, maybe one has come loose? I'll check them, but am hoping someone might have had a similar issue. Sorry bout the long post, thanks for any info.