Re: remote starter
No, you are not powering the starter directly from the remote starter sw, you are powering the solenoid to do the heavy switching. The remote sw is connected to a continuos 12v source with one lead and the other goes to the small 12v switched post on the solenoid. When the remote starter sw is pressed, the solenoid changes from open to closed, providing 12 VDC to the starter @ high amperage.
The remote starter sw is only able to switch a few amps, the starter draws well over 50 amps when cranking.