The amp is located behind the spare wheel in the rear qrter panel, on the drivers side, remove the spare wheel, then there is a sound proof padding, remove that also then you can see an inner structural brase, the amp is located behind the brase and held in place by three philips screws.
There is an amp inside the radio unit. Depending on radio type used there may also be a secondary amp inside the trunk mounted high up just below the rear windshield.
It was the starter
On a 1999 Mercury Sable : In the fuse panel by the brake pedal : ( # 17 is a 30 amp fuse for the front wiper / washer )
( fuse # 21 ) is a 20 amp fuse for the cigarette lighter on a 1996 Mercury Sable
yes they are. it's a 40 amp fuse
# 29 is a 20 amp fuse for the cigarette lighter
In a 2002 Mercury Sable : In the passenger compartment fuse panel , below and to the left of the steering wheel , by the brake pedal ( it has a cover on it ) ( fuse # 24 is a 15 amp fuse for the fog lamps )
you can ground it right to the frame. just find a bare spot and put a screw with the ground wire
In a 2001 Mercury Sable : ( # 13 is a 20 amp fuse for the cigarette lighter ) * in the fuse panel below and to the left of the steering wheel , by the brake pedal ( it has a cover on it )
On a 2003 Mercury Sable : In the Power Distribution Box ( which is " live " ) located in the front of the engine compartment by the battery ( # 30 is the fuel pump relay ) Also , # 16 is a 20 amp mini fuse for the fuel pump relay
it should be on the left side of the trunk underneath the carpeting. just pull that off and it's bolted to the side.
On a 2008 Mercury Sable : In the power distribution box ( which is " live " ) located in the engine compartment by the battery : ( mini fuse # 13 is a 20 amp fuse for the instrument panel power port and # 14 is for the 2nd row power port )