Here's the specs
Length: 4.25 inches of pure light.
Diameter: .25 inches
Encased in a 100% acrylic shell, enabling 360 degrees of light
Special coated 12V inverter for safety.
Average Current Demand +/- 350mA at 12VDC.
Average Current Damand +/- 4.3w.
High-Quality Jam-Nut Switch installs quickly and Easily
So 350 mA is nothing for my 30 amp rivergate