I have not found the information I had on making a crosbow lighted nock, but here is part of information I had on lighted nocks that could be used in buiding one for the crossbow if you want to try. Trouble is, the Lighted Float battery (light for fishing float) + the nock required ($5-7) is almost the same cost as purchasing already made products.

http://www.youtube.com/watch?v=hMqLT-4ezzk

Halfmoon nock ... Orange ....http://www.yeoldearcheryshoppe.com/carbon-express-half-moon-nock-p-1147.html?osCsid=37197ce23ef432c0321c6251c1aaccd4

Flat nock ... Yellow http://www.keystonecountrystore.com/Archery_Equipment_-_Supplies/Crossbows_-_Crossbow_Accessories/Crossbow_Bolts/Carbon_Impact_Ultrabolt_Flat_Nock/Page_1/XBO2210004.html


There are other methods but not easily to gather all the bits into one instruction sheet. Mostly, the other information are alterations to the above methos you posted. Just adapt the methods to your needs and use the crossbow nock over the regular knock. The above is a start for you, if you need more I will see if I can get it all together.