Older DC H10-30 cleaning ?

[Scrabo]

I have two sets of older DC's H10-30 and they appear to be working just fine so far ( just use them for rear seat passengers ).

Someone at the local airfield recommended cleaning the plugs on them every once in a while...

Can anyone recommend a good cleaning product and/or method ?

Thanks

 

[N5571Q]

IMHO, there is nothing better than Deoxit for cleaning electronic contacts.

http://www.caig.com/

Or, just use use a pencil eraser and wipe it off with some alcohol and a paper towel.