i want to make my brake light show turn signals. most of thje new cars come like this now.
each taillight has two bulbs for brake lights, i just want to use the outer ones for turn,
basicaly when i engage left turn signal and brake at the same time my right tails are both red, but left inner is red outer is flashing. i know its possible so i dont need any post that its impossible, i just need the diagram how to connect the trailer light converter in to the civic circuit, also do i need 1 or 2 flashers?
thanks

 

You need a "logic" flasher circuit. I've seen them built into trailer harnesses for boat trailers that only have 2 lights. That way a single light on each side can function as both brake and turn signal. I've seen them for sale at JCWhitney, or a local auto parts store might have something like that.