I think the original leads are 25mm2 or maybe even 16, I'd go for at least 35mm2 with good crimps or soldered connections. You are pulling 300-400 amps when starting and more in cold weather, so go for the biggest that will fit and avoid volt drop issues.Hi, what is the recommended size of lead for Earth & Positive for a Ford Maverick 2.7 Diesel?
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