I have only done a test in my darkened basement, but this seemed to work very well: https://victory-products.com/collections/lighting-victory/products/aa00287r It's far brighter than something like a LED indicator light but nowhere near the brightness of your typical BA9S LED (and I couldn't find one that fit anyway).
Assuming our compasses are the same (Gemini compass with the light under a small black circular plastic light cap that snaps onto a holder on the compass dome along with a red filter), by drilling out the hole in the light cap slightly, this LED slides right in. Don't use the filter ... get a red LED. The only issue is the pigtails are such a small gauge (26 AWG I think). In my case the wiring and especially the BA9S socket were far past their prime. Perko makes replacement bases but they are pretty pricey. You can also order a LED replacement .... or original here: http://www.vikingcompass.com/gemregpart.html On Mon, Sep 4, 2017 at 9:19 AM, Dennis C. via CnC-List < cnc-list@cnc-list.com> wrote: > I replaced the bulb in Touche's binnacle compass this weekend. Really > wanted to look at an LED bulb but got hung up on the brightness. I just > replaced it in kind from an auto parts store. > > The original bulb was a trade number 1891, 3.4W, 12 VDC mini-bayonet > (BA9S) base. It's not difficult to find the correct base and height but > determining the brightness is confusing. I don't need a compass light that > can be seen by the International Space Station. > > The new specification for LED bulbs is in lumens. I did some quick > research on the Web but couldn't find a reliable conversion for watts 12 > VDC to lumens. Found some sites for 120 VAC but not 12 VDC. > > So, how many lumens is a 3.4 watt 12 VDC bulb? > > Has anybody found a decent website for converting watts 12 VDC to lumens? > > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > >
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