I ( actually wife)knocked the steaming light lens off my circa 1985 forespar combo deck/steaming light (one bounce on deck then into the drink, dock mate stiffled his grin). The outside diameter of the lens is 1 3/4 inch. Forespar makes a model ML2 combo light. Anybody know if lense are interchagable with old forespar models? I sent this quesiton to Forespar 10 days ago, haven't heard from them. As an aside, I winched wife up to speaders after hoisting a 4:1 tackle up the spin halyard. Lots of easy cranks and good control on the lowering. Used chair with separate harness with prussik (sp) knot sling onto main halyard made fast, as a back up.