I remember the old days with just a positive and negative cable.Yes, I agree with Mark S.
Here is video on swapping out a Ranger battery- the guy explains all the electrical problems he is having before installing a new battery. AJ's complaints sounded very further.
I learned ago time ago before all this fancy shmancy stuff- to install new battery if the used car I was buying had the original factory battery or some old 2-3 year old battery.
(Hey...did I just do the old man thing, "Back in my day...")
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