Here is another Helmet that I have been able to modify with some LED lights. This Helmet is something that I had previously created for a Sci-Fi film a while ago. (So I don't have instructions on putting the helmet itself together... sorry) but adding some cool looking "chasing" LEDs is fairly simple to do.
All oft the LEDs, Connectors, Color Controller, and Battery (Basically everything for the lights) I was able to get from www.elementalled.com. The links attached to the materials list will take you to the corresponding page on their web site.
This is where we will be connecting the positive power line to the strips. The positive line will always be running through the lights, but they will not light up until the negative power comes in as well.
a) First take your foot of Purple LED Strip Light, and cut off (3) 2" Strips. (Cutting on the cut mark of course)
b) Then cut off (2) very short segments of Black wire from the 16.5' RGB Extension Cable.
c) Using your Soldering Iron, solder the short segments of wire to the positive solder points between strips one and two, and between three and four.
d) Then Solder a longer Black wire to the positive solder point at the beginning of the total fixture.
This will be the start of one full segment (ear) of chasing light for the helmet. For my helmet I did this twice. (Once for each "ear")