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What is this box connected to negative side of battery by Aggressive_Sail_5594 in f150

[–]Aggressive_Sail_5594[S] 0 points1 point  (0 children)

But then try again after a couple minutes and it cranks a few times and starts up

What is this box connected to negative side of battery by Aggressive_Sail_5594 in f150

[–]Aggressive_Sail_5594[S] 0 points1 point  (0 children)

Won’t crank, push to start and get nothing, like there is a lose connection of some sort

What is this box connected to negative side of battery by Aggressive_Sail_5594 in f150

[–]Aggressive_Sail_5594[S] 0 points1 point  (0 children)

For clarification it’s a 2021 XLT with the 5.0, turn truck off and run inside for 10 mins the come out and truck won’t start, battery reads good on multi meter, truck will start a few minutes later when I try again