electronic rust protectors

Has anybody used a electronic rust protector on their 4x4,
Having returned from N/Z, they used a product called rust eater- when fitted to the vehicle, it sent a small current through the steel - when fited on rubber - cross bond it with a eart wire.
It sounds good - there is a similar product in the States,
just looking for some feedback.

Cheers Leebson

JC Whitney used to sell a kit you tapped into your vehicles 12v system, not sure if they still do anymore. It's funny they dont have such a kit readily available like they do for boats, sacrificial anodes(I think that's what they are called?) Strap a zinc block to a few areas of metal to keep the rust away. Underground pipelines often have zinc anodes on them as well to ward off corrosion. Interesting idea!
G/luck
Joel

I remember seeing them in the JC Whitney catalog years ago and they are still being made:

http://www.jcwhitney.com/autoparts/ProductDisplay/s-10101/p-5/c-10101

I don't know how well they work. If it keeps the rust away, ELECTRO-SHIELD™ would be worth the expense.


Dale