The headlights on my car use the two-bulb headlight cans. The second socket is a dual filament socket which I use for park/turn lights. I use an amber bulb for the turn/park lights with LED tail lights. The combination works fine with a standard clicker. See
http://cedarcreekas.org/TechTopics/1...rn_Signals.pdf Also see
http://cedarcreekas.org/TechTopics/T...Collection.pdf