Pump wiring I need to know the wiring order for the pump

Pump has a plug on connector. Disconnect wires and replace pump. No need to pull fuse. If you don't feel comfortable about disconnecting pump wiring at pump disconnect the vehicle battery.

Okay you got it here another diagram. If you are misfiring clean out the distributor it has tendency to oil contaminate,or if your burning rich heavy black smoke its the fuel pump not producing enough pressure, Dont confuse this with the MAF sensor your injector is pulse width modulated.

Unless the wires were removed the firing order cannot change as also the length of the wires do not permit that the wires switch over.
All what is needed is to check the spark at each plug , if of low internsity check the ignition system including the HT coil. Also the fuel filter and the fuel pump for the right pressure.

NOT QUITE SURE ABOUT WHAT U ARE TALKING ABOUT, BUT HERE IS THE ORDER OF THE SWITCH POWER SELECTOR, WHEN IT IS POINTING AT HI THE WIRE UNDER THE POINTER SHOULD BE BROWN AND GOING CLOCKWISE NEXT IS ORANGE ,WHITE BLACK . JAY HE POOL PUMP REPAIR GUY IN LONGWOOD FL

Some newer heat pumps have a circut board that overrides your stat. Those you must program the stat as if it was a conventional. If your system is old here is the typical set-up. You will have this order. G=green wire, W1=white wire, O=orange wire, Y=yellow wire, C=blue wire, R=red wire. W1 is also called aux. G controls the fan, Y controls your compressor, W controls your heat, O controls your reversing valve, R is your 24v power, C is your 24v common. If this hookup does not work you will need to be able to understand your electrical diagram in order to fix the wiring issues and a professional might be required.

There should be two wires that go to the float switch. Jump the 2 pins that are connected to those 2 wires.

hi you can do a small test to see if the pump is u/s or the wiring is at fault, locate the 2 wires going to the fuel pump, get a small voltage bulb and 2 wires, find which is the + and which is the - on the pump wires and then tape the wires to the bulb in the order of, out side rim of bulb is - and the bottom of bulb is + then it is just a simple case of turning the key and seeing if the bulb lights up, if it does then its the pump if not then its wiring or fuse fault...you can test pump to but you will need to gain access to a + and - connection, ( i use the rear lights as then you do not need such long wires and just turn lights on to supply the power ) just connect the wire to the + and - going to the pump, and listen for a humming noise if you hear it then pump is ok, if not then pump u/s..phew lol, hope that helps please vote thanks

IF U HAVE POWER ON GRAY WIRE AND GROUND ON THE BLACK WIRE THEN THE PUMP IS BAD.THE OTHER WIRES ARE FOR THE FUEL GAUGE SENDER

its 110 v the two blacks are power and green is ground. the two blacks are reversible doesnt matter one goes to white nuetral and other to black hot. ground is ground to metal.

THIS 1994 Mercury Grand Marquis Fuel Pump Wiring Diagram Mercury Marquis Fuel Pump IS A 94, BUT IT IS THE SAME FOR BOTH YEARS.