I'm going from a 3 prong to a 6 prong ignition.

I know what the wire colors r on the 3 prong original ignition.
Red = Hot
Red/Grey = Accessories
Red/Black = Start

What I need to know is how would I do the 6 prong connection? Im unsure to witch ones i should hock what to. Here is a pic for example of what it looks like.

 

Hot, same as battery positive. 1,6

Accessories same as dash / tail. 2,3

Start ( I assume ignition wire) = horn brake.. 4

5 will be a no connect as the headlights are wired to the ignition wire.