First of all, English is not my native language so please forgive if I'm not making myself clear when asking some specific questions, I'll do my best to try to traslante what I want from Spanish.
I just got my kit and I'm very exited about it now I have the first question
What kind of wire should I use to connect the luxeon ?
I have been reading but I'm not sure about it, should I use
22 or 18 (Im trying to convert an MR FX)

Second question
I have been checking the tutorial but I just can't find where to use these 2 parts



Sorry about posting so many pics but I think this is the best way to post my questions without writing something wrong.

Thanx in advance for all the help you can give me.