I'm working on a old Celica that has been setting for a quite a few years but I've replaced the battery and got the engine turning over and it will fire when gas is poured into the carb. I had to remove the fuel tank to wash out the old gas. When I turn on the switch there is no voltage to the plug that goes to the fuel pump. While the switch is on if I unplug the fuel pump relay and plug it back in it does make the clicking sound like its working.....I assume it works the same way a stand-alone solenoid works. I don't know if there are any fuses or other connectors that could have come unplugged in the same circuit that send 12v from the relay to the fuel pump. Any suggestions is appreciated. Thanks in advance.