I am planning to add two rear fog lamps with a combined current draw of 0.66 amps at 13.2 volts, which translates to roughly 9 watts.
I can't really figure out how to run a wire from the trunk to the passenger compartment on my car (2012 IS350c). I know it's possible, but I can't really figure out the routing. I know I can poke around with a clothes hanger, but I have a better solution in mind anyway. Is this a realistic solution?
My solution is to keep a small, AGM lead-acid battery in the trunk, like a lawn-mower sized AGM battery. The battery will be secured in a corner of the trunk. The battery will power a relay, which will be connected to the rear fog lamps. I will use a wireless relay so I can hit a button in the passenger compartment and activate the relay in the trunk.
My questions are:
Is my plan realistic? Will it actually work?
What are some good sources of 12v wireless relays?