Recently I got a Sperry Car and am begining to install a Loksound decoder in it, quite simply because they offer close to the proper sound. As I really do not do too much of this kind of stuff, I had a couple of questions after looking at the wiring. Not sure I understand the color change on the front and rear pickups. Its Red on the end of one Truck and Black on the other end. The two sticking up went to the light. Why the color change? Or can someone let me know which ones go togather. I am pretty sure I can put the decoder in, but the wiring on the car has me a little stumbled.