Haven't been in NYC since 11/1969.. try the phone book?
http://www.nycewheels.com/
If you get some of the SCHMIDT coAx wire it will be more rugged than the B&M twin Lead
If you measure [replicating the distance needed with string], how far the light's wires have to go
Peter White in New Hampshire, who sells the Lights, and has the Co Ax wire , can make up the wires for a Plug and play
when they get mailed back to you ..
http://www.peterwhitecycles.com/index.html
I like using electric tape holding the wiring down and then slim Zip ties cover the tape adhesive weakening with age
[real 3M tape is the best. ]
'/,