Last time when I clean it, I only opened the top cover to expose these contacts, rainsed with a bit of solvent, then followed by WD40. I imagine...
I think it may be something to do with the electrical contact. I cleaned the switch with WD 40, it works good for a while, then the problem...
My signal turn switch works ok when the weather is warm, fail to switch when cold. I opened the assembly a couple times to clean it, problem went...
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