hi guy i have a few questions. im putting in a hitch on my 2006 X5 3.0 this weekend and it did not come with a light plug (the peice that gets mounted next to the hitch that you plug into for lights). i need that peice, where can i find it. and my next question is, in the fuse box, fuse number 78 says trailer. so i am pretty sure that i have the wire pre-ran in my truck some where, but where is it? what do i have to do to get to it? if someone can post a picture as to where i can find it i would really appreciate it.

thanks for all the help,
gianvito