Instrument Panel Lights Dim

64dart170 said
Even with an extensive water rinse after??
I usually submerge hot soapy water, then rinse. Will that be OK then?

LOL and water is the second ingredient required. Google the word "retsyn".
If I wanted to impress a child I might shine a penny with hot sauce.
I'll continue to use scotch bright and WD-40 to clean copper contact points.