Sears sell a plug that allow you to do this.
Plug them both in and anytime the 1 plug goes "active" it will activate the
other.

"Michael Billings" wrote in message
news:GKszd.14068$uj2.11284@clgrps12...
I have a Bosch 3915 Sliding miter saw. I'm bolting it to nice bench with
support wings. In base of the bench I want to have storage as well as a
shop Vac. directly hooked up to the saw. Ideally, I want to be able to
turn on the saw and have the shop Vac function at the same time
(automatically). Is there a way to do this without major wire modification
on the saw? Thanks.

Michael B.