Non-DRL SR5: Adding DRLs?

I like the look of aftermarket headlights on a non-DRL SR5 2012, but what options are there if you don't have DRLs? I don't want to jimmy up something to make my emergency blinkers the DRL per se (articles I've read here on Tacomaworld suggest doing that), and I don't mind having a separate button to turn on the DRLs (which would make retrofits a better option, I guess).

Anyone do anything to actually have DRLs work per se, on an non-DRL SR5? As in, the DRLs dim when the headlights turned on. Anyone get this to work?

 

On your 2012, you would change the non-DRL relay to a DRL relay.