Requirements:

A - Code S 6154 - 4 way ‘AA’ On/Off Switch Battery Holder
B - Code Z 3982 - 5 mm White LED 8000 mcd
C - Code R 1028 - 25w 12R Brn-Red-Blk resistor
D - Code W 4100 - heat shrink tubing
E - small length of plastic from pen
F -  white drinking straw
G - solder
H - 3 ‘AA’ batteries
I -  4 stick-on rubber feet.

Open the battery holder and release the small screw holding the cover plate in place. 

Pull the red & black wires back inside the holder

Solder a short piece of wire between the positive and negative tabs to bridge the 4th battery space in the holder.

Note: If you decide to use a 3 ‘AA’ battery pack this step won’t be necessary

 Screw the cover plate back into position.

Insert 3 AA batteries (negative end to the spring) and test the voltage output is 4.5 volts.

Shorten the red wire to approx 3” then bare the end of the wire  1/4”.

 Cut a small piece of heat shrink tubing and position over the length of the wire. 

Cut the excess wire off the resistor, leaving approx 1/4” either side.

 Solder the red wire to the resistor.

Slide the heat shrink tubing over the solder join and use a lighted match to shrink the tubing into position

Cut a small piece of plastic to make a support the LED. (The plastic from a pen or pencil is suitable for this) If the LED slips through the plastic it may be necessary to make a sleeve inside the plastic.

 Drill a small hole in the lid of the battery holder, making sure this is situated over the spare battery space. 

Slip the red & black wires through the  hole in the lid and then through the plastic LED support

Cut a small piece of heat shrink tubing and slide it over the long leg of the LED.  Solder the long leg to the other side of the resistor.  

Slide the heat shrink tubing over the join and shrink into place. 

Cut approx 2” off the black wire and bare the end of the wire. Slide a small length of heat shrink tubing over the wire. 

At this stage you should be able to test the light is working by turning the switch on and touching the black wire to the shorter leg of the LED

Turn the switch off and then solder the black wire to the LED. Slide the heat shrink tubing over the join and shrink into place.

 Slide the lid of the battery holder up over the wires so the LED is seated onto the plastic support.

 Pull the excess wired back inside the battery holder and arrange in the empty battery space.

Use 5-min Epoxy to glue the LED onto the plastic support and the support into position over the hole in the lid.

 Make sure the wires are tucked inside and then close the case. Test the light.

 A short length of drinking straw is used as a diffuser to avoid a shadowed line inside the egg when using the light. 

Glue 4 self adhesive rubber feet onto the bottom of the light.

A big thank you to Mark Kelson for all his work in making up the original lights for Lyn. 
Without his original brainstorming these instructions wouldn’t have come to light.