This video will show you how to bring your old lighted US1 Trucking Lighted Peterbilt Truck Cab 3935 or 3939 back to life! I used the #3935 Peterbilt in this video. I've had this truck since I was a teenager, the bulb went out on it shortly after I took it out of storage and ran it, and I had previously just twisted a new bulb on. In this video, I correctly soldered it back onto the base. I sell the bulbs on our website at https://tycous1trucking.com/replacement-repair-parts/#bulbs