After seeing the corrosion on @Nhoward vehicle and knowing that I am setting my vehicle up as a keeper, I am wondering about peoples experiences with the installation of electronic rust preventers or corrosion control devices. Some use a sacrificial anode, others induce a charge into the body - who has used one, what were your results, impressions and recommendations? I don't expect to see a lot of salt driving, however the truck is being set up for some extended travels, so beaches are a certainty.