2nd Gen Non-Engine/Transmission Sport headlights and relay question

[robbiesworld]

I have a set of sport headlights and I am going to make a fre harnesses to run them. My question is will a 30/40 Amp relay be ok to run a 9004 and 9007 bulp at the same time?

 

[jkalchik]

Do the math... ... . 55 watt low beams, 65 watt high beams.

If you run all 8 filaments through a single relay, that's 480 watts. At 12 volts, that's 40 amps. If you're only going to run the 4 high beams, that's 260 watts, or 23 amps.

When I made my harnesses, I made one per side, so the draw is at most half that.