07 Tundra headlights

When I first got my 07 Tundra back in 09, I had the dealer change my stock Daytime Running Lights to full-time all lights come on anytime the truck is running. I believe it was a relay that was installed to fool the computer. Does anyone know where that relay might be located and if I pop it out will it just put me back to where I was before with just DRL during the day? Thanks.