Twin Headlights How do you fit them

[ARCIE31]

I am swapping over to twin headlights as I streetfighter my Bros. Up front I've got a digi dash, Chrome triple, chromed Deauville forks, chrome brakes & VFR wheel.
The problem which I hope one of you whizz kids out there can solve is how to fit them.
The headlight bulbs are single element H3's.
I want one headlight to be one while driving in general (daylight, night time etc) but I would like both on (high beam)when driving down country lanes etc.
Each unit only has two cables
Fingers crossed
Cheers guys & Gals
ARCIE 31

[dagus]

https://www.aztec8.com

[VWTim]

Here's how I wired mine. Using ~3.5" single element H3's as well. I have 2 relays under the tank. One relay is connected to the "low" light, and triggered by a "ignition on" wire, I believe I tapped into the instrument cluster illumination circuit. I then have the second relay that runs the "high" beam triggered off the high beam switch. I hope this helps, if you have some basic wiring skills it's an easy setup to do.