There isn't any real tearing apart of the dash, and it should only take you less than a minute to get to the stock wiring harness. All you need to do, is remove the 4 hvac knobs, then take a thin tipped standard screw driver(ice pick will work too) an insert it at he corner or one edge of the hvac panel and it should pop right off. The wiring harness is attatched to the back of the clock knockout plate and pops right off. If the clock works the whole installation should take you less than five minutes. If you don't want to try this, you could call the dealership and ask the parts counter if they can test the clock. If they can/will, it should be free of charge.