I use DetoxIT D5 from Craig laboritories to clean connections
http://www.deoxit.com/

dielectric grease can be used on the connections after cleaning.

Todd

 -------------- Original message ----------------------
From: Mark Keller <kelphoto@TELUS.NET>
> Ox-gard is such a grease for electrical connections.  It claims to reduce
> connector losses by using a "particle" which enhances the mechanical grip of the
> connectors.  I did all of my van's connections when I first got it ten years
> ago.  No complaints.  BTW I first degrease each connector, then dipped it into
> "TARN-X" which does an excellent job removing the rest of the corrosion on the
> connectors
>
> Mark
>
> Date:    Mon, 8 Oct 2007 12:17:45 -0400
> From:    Kai Mei <kai@NEWCLEAR.US>
> Subject: Conductive grease for connections???
>
> Is there an optimal way to put together ground wires to the chassis,
> that delays corrosion?
>
> What about the engine harness, do those connections do better with
> something?