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SIX N scale WP and DRGW nose gyralights. Seen on GP40, GP40-2, SD40T-2 and SD50 locomotives.
To install nose cluster, soak in Bestine overnight to fully remove all wax support material. Cut hole into nose of locomotive and adjust for a snug fit. Install either 1 mm (.040") fiber optic for a lighted gyralite or MV lens (701) for a non-lighted installation.