Fuel pump power supply?
I am trying to find out what color or which wire coming from the fuel pump relay would be the power to the fuel pump. I replaced the relay but the pump still wouldn't run, after a long day in the hot sun I was getting ready to give up , one last try turning the key...and the pump came on and it started right up, after a couple of minutes it stalled, then no pump again. Up until this it has always been an instant starting engine runs strong no sign of a problem. I shut it off the other day, went out later to start it and no pump.
1990 GS,8343 model, Oshkosh chassis, ford 460 EFI C6 trans just rebuilt.