karrs, welcome to iRV2.com. We are glad to have you join us here and we look forward to reading of your adventures and experiences. I am sure you will enjoy this website.
Do you have any blank switch spaces in the dash area? If so and you are electrically minded somewhat you can add a switch and run a feed from a fused 12 volt supply from the ignition side of the chassis electrical to the headlight and rear running lights.
The switch and wire gage need to be sufficient to handle the amperage of the load. or you will need to install a relay to control the circuit. If you are not comfortable with electrical issues you should consider having a qualified person do it for you.
Keep us posted and enjoy the website and forums.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7