Enter Rigid Industries ... a comparable 35-watt HID light that would draw about 3 amps of current. For similar light output, you could use a 6-inch "E" Series light bar that would only consume ...

Rigid Industries makes LED and HID lights for the military ... one of them was cut in half on a band saw and each half still operates, due to the redundant wiring. They had a 4′ long light bar that ...

You might need to buy a light-mounting bar ... and enough wiring to reach from the dashboard switch to your car's battery and then out to the driving lights. A wiring diagram can guide you.