cant find fuel pump relay

please help ..... where is fuel pump relay located and what does it look like on 1994 S-10 PICK-UP TRUCK 4.3 L Z- VORTEC V-6 2X2 DONT SEE IT ON FIRE WALL..WHAT ARE THE WIRE COLORS TO RELAY...............................FUEL PUMP QUIT WORKING WHAT ELSE SHOULD I CHECK FOR ??? ANYTHING WILL HELP THANK YOU.

I don't know about the 94 but on the 92 4.3 the colors where DK GRN/Wht...ORN...GRA...BLK/WHT, and it was on the firewall on the drives side. there are 4 wires going to it. I have had 3 fuel pumps changed but couldn't tell you how to check them.

Relay is in underdash conveniance center. center of dash.
The test plug is over on left side underdash kick panel area.
If you can find test plug see if it is getting 12 volts on key on fuel pump prime.
If not hook a fused jumper to it and see if pump runs.
MT-2500