Well I finally replaced my cab lights after one of the bulbs burned out. I purchased a set of clear Recon lights. My question. When I removed the cab lights I had to black wires. One of the black wires had a thin white line running down the wire so I assumed that was the ground wire. The other wire was solid black which I assumed was the hot. Anyway alot of assuming but I hope I was correct in my assumptions. I also put a dab of RTV Silcone down the screw holes which I hope will eliminate and leakage issue. I look forward to any help you can give me.