Sorry about my profile but I'm new at this. I've just wired my 2007 Tundra with this excellent wiring diagram and I'm waiting for the new flasher unit to complete this installation. My problem is that when I bought this truck it came to Canada with DRL"s hooked up to the low beams and I wanted it to work with the signal lights like in the instructions. What I discovered was the high beam lights were disconnected (the high beams were on all time & disconnected) The high beam switch will indicate them on and off but they stay on all the time no matter what position. so they are still disconnected at the lights. They had the 2 relays like we need for this hook up (didn't change flasher relay) but they hooked onto some wires at the ECU which I've changed and hooked the relays up different and also they ran the head lights on wire to the fuse box (I couldn't access inside the box and determine exactly were they hooked on but I assume the left low beam fuse instead of the green wire) - which I've corrected and until I did this the low beams kept working as DRL's. This truck has automatic light shut off which works fine but I was wondering if anyone would know what is happening with the high beams.
Mike