2003 Kia Spectra, here's the backstory : I recently changed the spark plugs and soon after doing so I tried to turn the car on and it only cranked. The owner before me probably try to work on the engine and now there's no spark plug harnesses at the end of The wire it's only two little bare metal clips that plug into the prongs, so I thought maybe there was no spark. I check for spark and there was spark but for some reason the car doesn't start. still not turning on, l I flip the polarity on the metal wires thinking that might have been it but after doing that it blew my ignition fuse lol Then I realized I couldn't hear the fuel pump turning on so I bought some starter fluid and it started up so I guess that was my fuel pump. I bought a new one I put it in and it still didn't turn on, only cranking. I ended up jumping the the terminals at the relay and the the fuel pump starts right up but the problem is it won't turn off now so in order to turn off the fuel pump I have to take out that paperclip and put it back in every time we start the car. I checked and cleaned my ground connections and checked for blown fuses and loose connections and broken wires. I haven't traced the wiring from the fuse box to the fuel pump yet because I get headaches inspecting every single eclectical connection. Can anyone point me in the right direction to figure out why brand new relays don't turn the fuel pump on?
If jumping the terminals at the relay made the pump work, then there is no point in checking the wiring from the fuse box to the pump, since you have just proved that it is OK.
Things to try -
Swapping the relay with an identical one from your fusebox - This will test the pump relay in another circuit and also try a known good one in the pump relay circuit.
Remove the relay then connect a 12v bulb between connection 85 and 86 in the socket where the relay was removed. If the bulb lights when you turn the ignition on then the signal to operate the relay is working.
Report back with the results of these tests.