Helping a friend install a fuel pump in his 73 2.0 in a few days. Does it matter which way the hot and ground wire go to the pump? The connector looks bi directional....

It's been a long time but i think the connector only fits one way. if i recall correctly the center notch has a rounded cutout on one side that prevents the plug from being used both ways.

Sir Andy is correct. Fuel pump also has + and - if the plug is missing. Brown wire is ground.

It matters. Run the pump backward and you don't get fuel pressure.

Of course it matters. You want to run the pump in the right direction. (DC motor science, the direction it runs is determined by the polarity. Get it wrong and you suck )


There are different terminal sizes that are easy to see. And wire colors. Aftermarket fuel pumps just use wire terminals, not keyed connectors. And no, I will not spend over $300 for a fuel pump just because it has the right connector. It amazes me how many people will pay such huge money when a good fuel pump is under $40.