Electric hook ups...Accusump ganged to fuel pump

[JCoop]

Funny, I thought there was a dedicated sub-forum for electrical stuffl but I guess not.

OK, I'm wiring the Accusump and it requires an on/off switch that picks up power from ignition on, then supplies it to the electronic valve that opens up the sump and supplies oil to the engine before start.
I'm thinking of using the existing electric fuel pump switch to do double duty, so I don't have to drill another hole in the dash.
I turn the fuel pump switch on (after ignition on) before starting the engine, (which is what you need to do for the Accusump). Then you're supposed to turn off the Accusump just before shutting down the engine to close the valve and retain current oil pressure (which you could do with the fuel pump).
If I change that switch to a higher amp rated switch, wouldn't this work?

Thanks for any input.