I ALWAYS use the NAPA AR200 relays. They are 60amp continuous duty relays for power seats, windows & door locks. They will never go bad like some of the lessor cost relays including Hella's. Do it once & do it overkill. On my '64 Riv. I have two low beams that are 90 watts each = 180. Two high beams that are 155 watts. So lows come out to 180 watts & highs come out to 620 watts ( 4x155=620) for a total of 800 watts. I mounted my relays behind the battery just behind the radiator support. The run of wiring at the longest is 4 feet. The stock wiring has no problem handling the load. It's been this way for 30+ years & I've seen no ill effects to the wiring. Driving from Vermont to Ct. at night & when I got home just for the heck of it I felt the wiring to the right side which wasn't even warm to the touch or the terminals to the lights.
They are not that extremely bright in the daytime, and like my picture above that's dark green,By the time you have that much light,you need the headlights on anyways...I
