Go down by the starter and pull back that insulation. I guarantee you will find twice the amount of corrosion as you did up top. I went thru this with my ‘04 F150 after a new battery and also adding a 4.40:1 gear reduction mini starter to up the crank over speed only to finally see all the corrosion at that end..
New pos harness with new 950 CCA battery and the high torque starter later and it damn near turns over faster than it idles! Almost sounds like a super car turning over.
Same in the Marauder minus new cable but big 3 added, and an even smaller billet version of same starter.
Both vehicles start with zero effort.
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SOLD 12/31/2021
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