Hello, I'm Chris, a current Ford Lincoln Mercury employee. I am a master certified tech in all driveline repairs including; Auto and Manual Trans, Transfer case, Steering, Brakes, Axle, Suspension, and Driveshafts. I am also certified in Gas and Diesel Engine repairs including Driveability as well as Electrical and HVAC. I also perform most of the noise vibration and harshness concerns but in person they are difficult and much more difficult on the internet.
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This click noise is most likely coming from the starter relay. I suggest you turn the key to the run position and follow the red hot wire from the battery to the relay mounted on the firewall. Most likely there is a black trim piece covering it. You can use a screwdriver to cross the 2 big terminals. This will produce a spark and start the vehicle indicating a concern with a bad relay.
Did you cross the 2 terminals on the relay with a screwdriver like I previously stated, if so did it crank then?
When it clicks can you tell what component or where the click comes from?
When you cross the terminals on the relay you are bypassing all of the ignition and sending straight battery voltage to the starter. Since it sparked this indicates it is sending power.
You are going to need to get under the vehicle with a DC volt meter and check some stuff on the starter.