According to the owners manual, it is located in the fuse panel on the passenger-side kick panel. I am not aware of any other power distribution locations on this vehicle. It clearly states that the R303 "fuel pump relay" is located in the passenger-side fuse panel. It is also a non-serviceable relay as it is built in the circuit board. hugybyr Discussion starter. 20 posts · Joined 2011. #1 · Sep 20, 2011. I'm working on my non running 84 380SL and I can't seem to locate the fuel pump relay. I disconnected the positive lead from the pump and ran a wire from the bat terminal thru a switch then back to the pump so now at least it fires but will not keep running. On a 1991 S10 with 4.3L engine, the square plastic fuel pump relay and the A.C. relay is located on the driver's side (LH) of the firewall behind the power brake booster. There are two identical relays at that location and the one on the passenger side (RH) is the fuel pump relay . They may or may not be in the same location on your 1994 S10 The relay that activates the fuel pump is the circuit opening relay here is its location by the drivers side. Here are also some guides and diagrams to help you get the problem fixed. Please check the EFI relay as well. Please run some tests and get back to us so we can keep helping you. .

fuel pump relay location