That's not going to clean off with electrical parts cleaner. You need scotchbrite pads or a new module. FYI: grease on the terminals will prevent future corrosion. A large container of dielectric grease is not as expensive as purchasing it in small quantities.
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Moderating everything now, let me know if I can help.
Originally Posted by the user formerly known as ZX3_Chick
You're special aren't you.