Just rewire /splice as close as you can going into the module with anything thicker than the oe wires. For this applications 16ga in an Ancor Marine grade would do it.
Tin Copper with better shielding wont fry like junk copper auto wires.
When I re-wired the high output alternator I was able to find on the spool Accor Marine grade at a local marine supply retail out let. I also use Ancor heat shink tubing that stuff is sticky and really will seal it.
Link about Ancor: Available in red & black.
Wire & Cable | Marinco
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