I'd try to find some Stabilant.  This is what VW used at the factory for contact enhancement.

VW Part Number ZVW 186 001 STABILANT 22A

It's not cheap, but reportedly very good stuff.

Allan

On Wed, 10 Feb 2010 16:58 -0600, "Alan Felder" <dieseldoofus@GMAIL.COM> wrote:
> Anyone have any thoughts about whether or not it is ok to put dielectric
> grease on the T14 connector or other connectors at the instrument cluster
> foil?  Will there be any detremental effects on the foil due to the
> grease?
> I've thoroughly cleaned all these connectors and like to put dielectric
> grease everywhere, but have held off on the foil areas.
>
> --
> Alan Felder
> Austin TX
> 82 Diesel Westy