It's not vibration as much as the "cold solder" joints that crystallize over
time and cause a void around the mounting pins for the relay.

"SoCalMike" <mikein562athotmail@hotmail.com> wrote in message
news:viI%c.158602$mD.151393@attbi_s02...
> John Ings wrote:
>
> > http://www3.telus.net/public/johnings/MainRelay.HTM
>
> if vibration is what helps the joints break, wouldnt it make more sense
> to hang the relay off a wiring harness with a zip tie to help absorb
> vibration?