Well, If you mean the fuel pump in the fuel tank, it is a 12 volt pump. The pump runs with the 12 volt system of the car.
Inside the fuel tank.
Should be just one.
it will be in the fuel tank.
passdenger side inner fender next to coolant overflow bottle
4 hot ground ignitor from comp/dist to pump
location fuel pump relay 92' merc topaz
I believe that it is in the trunk left side behind the cardboard panel. Should be a sticker there indicating this.
4
It's in the gas tank.
I think it would be the same as a 1993, in which case it is located on the left hand side of the trunk, by the hinge.
The fuel pump on a 1993 Mercury is inside the fuel tank.
According to my Chilton's Auto Repair Manual : For a 1989 Mercury Topaz ( front wheel drive ) ( 15.9 US. gallons )