I was going to make the cloth suggestion, but that leaves room for error if not done just right. Driving at night is a 100% test.
I was just thinking that he could control the on/off by covering and uncovering the sensor. Instant day/night.
2012 Kona Blue GT Premium 401A, Manual, 3.55, Steeda Pro-Action Shocks, Struts, Sport Springs, LCAs, Adjustable Swaybars, Adjustable Panhard Bar, BMR Relocation Brackets and Adjustable UCA, Driveshaft Shop Aluminum Drive Shaft, Airaid CAI, MGW Shifter, GT500 Axle-Backs, 3M Clear Bra and Tint, Side Window Louvers, JLT Oil Separator, Staggered MMD Zeven Wheels and Mickey Thompson Street Comp Tires, Bama 93 Race Tune