I did this with mine as well....I have ... wired it to my tail lights so the light comes on with the other lights ...
As a newbie, I leave mine on all the time. It helps remind me to turn off the battery disconnect.
Chris
Use an LED bulb and it will not get hot, nor will it burnout in our lifetime.
Bob,
Where did you find a proper size LED bulb? Are you still positive ground on your car?
-Blake