Starter wiring. 4.9
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5th Gear
Joined: Sep 2025
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Starter wiring. 4.9
Would appreciate some clarification on my 1996 F150 4.9 starter. Apparently there seems to be two solenoids? One is on the passenger fender and the second one is on the starter itself. I’m getting intermediate starting. I’m wishing to take the red small gauge wire lead from the mounted solenoid on starter wire towhere? Does it run straight to the battery or does it run to the fender solenoid unit? Thank you for your words of wisdom.
Cargo Master
Joined: Aug 2021
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Post number 6 at this thread has a drawing Need photo of installed fender mounted starter solenoid (showing wires) ... Monkey Wrenched? - Ford Truck Enthusiasts Forums https://www.ford-trucks.com/forums/1...l#post21669834
Hotshot
Joined: Jul 2020
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From: Near Salt Lake City
The fender mounted solenoid just sends the start signal down to the starter (the small red wire)
That small red wire has a tendency to break off at the connector and still look okay
The small wire also has a tendency to get hard and cause voltage drop
So, check the voltage at that small red wire when the key is in the crank position
It needs to be 10.6volts or above to "pull in" the solenoid
That is the test I do to the problem children
That small red wire has a tendency to break off at the connector and still look okay
The small wire also has a tendency to get hard and cause voltage drop
So, check the voltage at that small red wire when the key is in the crank position
It needs to be 10.6volts or above to "pull in" the solenoid
That is the test I do to the problem children
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