I looked in my catalogs upon my return from that trip and found that these
dual-bulb lamps were pretty expensive in all the catalogs I had.
But a month or so ago I saw an ad in SAIL from JSI for some dual-bulb cabin
lamps at the perfect potter price of $12.79 so i ordered one. It was on
backorder.
Just got the package from Johnson Sails today. The lamp is similar in size
to the existing lamp - it might evan screw to the same holes. Quality seems
decent, considering the price. Made in China. I'm not near my boat right
now, but i think this is going to work out nicely. I hooked it up briefly
to my car battery just to see that everything works, and the white beam is
BRIGHT - must be halogen. The red is much dimmer (and you want it to be).
I'll post more after I've had a chance to use the lamp at night installed on
the boat. I'll probably install using marine crimp connectors. I can't
imagine this install taking more than 10 minutes.