How to make an Internal Hanging Light System for a Vinyl Helium Inflatable,
This is for your reference only. We shall not be responsible for anything that goes wrong.
DO NOT LEAVE YOUR BALLOON UNATTENDED._______________________________________________________________________________
The light system described is approximately 2 pounds with 100' electrical cord.
PLEASE NOTE THE FOLLOWING: The 7' diameter round vinyl helium inflatable ball has only 4 pounds of lift. (160 cu.ft.) It is unable to handle the weight of the light system shown. But, if you add more helium to the balloon, (the material will expand), the balloon will be able to handle the weight of the light system. All you need to do is add around 60 cu.ft. extra, to make the 7' ball into a 8' diameter round ball.
The 10' diameter round vinyl helium inflatable has 14 pounds of lift (380 cu.ft.). It can handle 2 pounds of extra weight. Therefore, the light system shown should work.
Everything mentioned is just a guide, you may find another way of doing this that would make it better or easier.
You will need to purchase the following:
(1) Weatherproof rubber light socket. (2) Plastic lamp guard (3) Light bulb. I prefer fluorescent because it does not generate heat. (4) 2 wire connectors (5) Electrical Tape (6) 100' of 18 gauge wire white, 100' of 18 gauge wire black (7) Male Plug (8) Snap Hook (9) Approx. 7' piece of light wieght rope or bungee cord.
Note on the rope: You would like to make the rope long, because if the light ever goes out, you do not want to deflate the whole balloon just to get the lamp out. That is why I like a bungee cord. I can pull the light out with minimum loos of helium.
Assemble everything: Connect the socket to the lamp guard, wrap electrical tape around the screws so they do not tear into the balloon material. Connect the electrical wire connectors to the socket and electrical wires - wrap with electrical tape so the connectors do not become loose. Connect the plug to the other end of the wire. Install your lamp.
Install the light system into the balloon: While the balloon is still deflated, lay it out on a blanket or a tarp. Reach inside and pull the top-center anchor loop out through the filling sleeve. Attach your rope (or bungee cord) to the anchor loop, attach the snap hook to the other end of the rope. Attach your lamp cage to the snap hook, and thread the electrical wire out through the filling sleeve. You may want to test your lamp before you inflate the balloon. Now, inflate the balloon and make sure there is a little slack in the electrical line. When finished inflating, tie off the filling sleeve with a rubber band. I personally like taping the electrical line to the mooring line at 3'-5' increments.