Can anyone tell me what exactly fails in a combo switch that causes the low beams not to work, I have completely disassembled one and cleaned the contacts thoroughly, they had some slight discoloration but after cleaning them they are fine now, none of the soldered wires on the back of the unit are burnt but the low beams still do not work, I cannot see anything on the actual switch that has failed that would cause this. The fuses are fine and the brights work so I know that the harnesses are fine.
I have searched this and I know that there are tons of posts on this but nothing about what actually fails in the switch to cause this. I have two switches now and both do not work with low beams. Is there anything else that might fail.
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