Quote:
Originally Posted by BWhitmore
Normally cleaning the terminal does the job, but for extra conductivity and to prevent corrosion use Di-electric grease. Should be available at Radio Shack or Amazon.
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Dielectric grease does a fine job on retarding corrosion, but it is non-conductive, i.e., electrically insulating, by design. There are certain pastes/gels used to increase conductivity at junctions, but the need for them in automotive applications is quite rare.