here is a picture http://www.allfordmustangs.com/forums/attachments/5-0l-tech/40594d1204489550-location-1992-mustang-5-0-fuel-pump-relay-1992mustang-gt-5.0-001.jpg it is located under the hood attached to the passanger side wheel well. It is on the side closest to the front of the car.
I would look at the fuel system next. It takes two thing to make a car run, fuel and spark.
look in the trunk. if it has the relay button, it would prolly be on one of the sides, usually in a compartment. it would be a red button if im right. hope i helped
If your fuel pump is not receiving power it could be because a fusible link or fuse has blown, the fuel pump relay is not switching or the brain (ecu) is not triggering the fuel pump relay. To test it, pull the fuel pump relay and locate the coil prong and switch prongs on the relay. There is usually a diagram on the relay or the prongs are numbered. Prongs 85 and 86 are for the coil and prongs 30 and 87 are for the switch. Figure out ( carefully ) wich leads on the relay mount correspond with the prongs on the relay. Use a jumper between the switch leads ( 30 and 87 ) and have a friend stand by the fuel tank. Turn the ignition key to the on position and your friend should hear the fuel pump start to run. Don't run the pump for more than a few seconds. If it does not come on you have probably blown a fusible link or fuse. Remember to remove the jumper. If it does come on test the signal from your brain by using a volt meter or test light between the coil leads ( 85 and 86 ) on the relay mount. Have your friend turn the ignition key to the on position and the light should light up ( or the volt meter should show voltage ) for a few seconds then shut off. If this does not happen there is no signal from your ecu. If it does happen replace the relay.
If you look far and wide, you can get a pressure guage to check fuel pressure. Pumps are notorious for going out on these vehicles. And since it is located inside the tank, you will have fun replacing it.
check your inside fuse panel. look for ignition fuse. should say ing.
look underneath the passanger seat
The fuel pump relay switch looks like the normal electric switch. The function of fuel pump relay switch is turn the fuel pump on.
Most are cubical in shape.
http://www.partsamerica.com/ProductList.aspx?parttype=493&ptset=A&searchfor=Fuel+Pump+Relay
It does not have a fuel pump switch. It has a relay and a fuse for the fuel pump.
you look in the relay box
the fuel pump relay is located behind the battery.There should be 2 relays, they look alike, but if you look closely it has fuel pump relay on the top.
Th fuel relay in most situations will be under the hood in the fuse box. It will be black and square with numbers on the top of it. Often the numbers on other relays such as your horn will be able to be put in the place of your fuel relay to determine if it is truly the relay that went out.
that doesn't sound like the fuel pump relay...sounds like the fuel filter. look on the cross member immediately in front of the fuel tank
Black square near a second relay (for AC), under the bonnet , firewall passenger side.
usually a small black box on the firewall (back of engine compartment)
On right side inside of van reach up in side dash you'll find two relays one should be green that's your fuel pump relay the other one is EEc relay.