i have a 2001 mustang convertible that suddenly won't raise or lower the top. i set the parking brake like always, push the button, nothing. latches are released, no action with engine on or off. replaced hydro cylinders 2 years ago,and lines, hard to tell which fuses to check, owners manual picture is confusing!where do i start? thanks. p.s. found fuse , tested good, can you run power straight to top motor from battery to see if it works, or will this cause damage? talking just touch power leads to motor terminals.