The dimension you are looking for on the Erickson Adjustable Bungee Hooks - Qty 10 Item # EM05296-10 is 3/4 inches. That's the diameter of the "hook throat" which is where the cord fits through. It can fit cords that are between 1/4 inch and 5/16 inches. view full answer...
The Replacement Bulb and Socket for Blue Ox Tail Light Wiring Kit # 294-0774 is a replacement part for the Blue Ox Tail Light Wiring Kit # BX8869 which is designed to get the signal lights needed for towing your vehicle behind an RV.
I have know way of verifying if this would fit the housing in your 1949 Ford, I have included a picture that shows some measurements you can use to try and verify a fitment. You can swap the bulbs out for 1157-compatible LED's like the Replacement LED Bulb... view full answer...