Here is the best information that you will get. Take what you have and throw it away.
Now go and purchase what is made for what you are trying to do. Go to the HYPER LITES web sight and look at everything they have. They have what you want to do
When you get done messing around with your truck stuff you will have spent twice the money and nothing is standard and when it brakes down on the road it can get you pissed off and all you want to do is sell the bike because of those lites.
when you get done it will be a cluster f%%%%k