Sorry Oldfeller. I did a bad job explaining and the link my not have worked.. I know the light is always on.. That's why you would use the wire from the ignition switch to energize the relay. I forgot to put that in there.
The relay set up has very little voltage drop.
I wasn't sure if the same thing can be done on a bike, guess not
I used 2 30amp relays my car with.
I'll put some more thought into it and see if I can have make more sense with the savage