Both lights will not remain on at the same time when the high beams are activated. Not entirely sure how you would mod the wiring in order to get that affect since I believe once the high beams are activated, the actual HID bulb and halogen bulb shift. Although i could be wrong as I'm still really researching which HID bulbs to get once my current set go. Was thinking H4-2, no exactly sure what the difference is btwn. H4-2 and H4-4 tho.