The core purpose of a relay is to control a high amount of current with a smaller (lower) current. Relay Basics: How The Fuel Pump Relay Works * Your specific Ford vehicle may have different colors. You will be able to use the info in this article to diagnose the fuel pump relay on your Ford vehicle even if the colors of the fuel pump relay connector's wires are different! Ford Fuel Pump Circuits This is no big deal, since the circuit descriptions are the same. IMPORTANT: Your specific Ford vehicle may not have the exact same colors listed below. The Ford fuel pump relay has 4 wires that connect to it.Įach wire has a specific job to do and these are their circuit descriptions: You'll need two of them with alligator clips on both ends (you can make these yourself).To see what this tool looks like, click here: Wire Piercing Probe. This tool is a time saver of the first order.
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