Hi John, the end of the diode with a silver ring around it is the negative so in your set up the silver ring connects to the yellow and the +ve end to brown. The easiest way to do this is with a terminal connector block screwed to the frame. Something like the photo.
I`m probably the most impatient person you`ll ever meet. I had a very serious car accident just over 2 years ago. I broke my neck and some other bones, had to sit in a chair watching TV for nearly six months. Drove me nearly mad. If I never ever see another episode of Dr Phil or Judge Judy. it`ll be too soon. I eventually got the nod from my doctors saying I could start doing stuff again, so I did and promptly had a heart attack. I now have to be very careful about what I do. If I do too little my neck stiffens up and I loose the use of my hands(trapped nerves), if I do too much I risk another heart attack and my neck stiffens up and I loose the use of my hands. I can`t win. Next month I have to go and see a surgeon about trying to release the nerves.
This forum is the only thing that keeps me sane, I take anti depressants but I find talking people through their mechanical/electrical problems much more therapeutic, so please feel free to ask away. I get huge satisfaction out of helping others do what I no longer can.
Bob