I have something similar, made by Painless, that keeps both high and low beams on in my 94 Silverado. Anything that increases the light is worth it in my book (getting older and night vision aint what she used to be.) If you do this you may also want to go all out and upgrade to HID's. Talk to Logan. He's got a set on his dually and they are incredibly bright. I believe he spent less than $300 for the kit.