Because it's a small speaker that deteriorates over time.
check fuse under dash, chech horn relay under hood.
where is the horn relay located for 1978 lincoln mark v
Where to find the horn relay fuse for a 93 Lincoln Mark VIII
Should have spring loaded automatic belt tensioner--if not working may be defective
If it's the horns themselves that you are asking about, if my memory serves me, they should be by the radiator.
In a 2008 Lincoln Mark LT, the horn relay is typically located in the fuse box under the hood. This fuse box is usually found on the driver's side near the battery. To access the horn relay, you may need to refer to the vehicle's owner's manual for the specific layout of the fuse box and to identify the correct relay.
The 1990-1992 Lincoln Mark VII AOD is the only direct bolt up transmission for this car.
Yes, but it's not safe
You can troubleshoot the power antenna on a Lincoln Mark VIII by first checking the fuse. A blown fuse is the most common reason for an antenna not working properly.
Water....
you need a new brake booster
take out the controlpanel in armrest and clean and chek the relays