Hi dock.
I believe that Part # 1719192, corresponds to #23 on this parts reference:
http://www.maxumcustomercare.com/par...hts/lights.htm
That should be a light manufactured by Swego. It looks like the same that is in mine (1997, I guess they used them a lot). If the bulb has two metal prongs on it, it's a G4 bulb. You should be able to get those just about anywhere. Try you local home goods store. Or, get the LED replacements and cut amp. useage from 1.0 amp hours (.083amps for a 10w bulb) down to .01 amp hours.
Here's the Swego link for LED bulb replacements. They are pricey, but these are very warm. It is very difficult to tell the difference. I installed with regular right next to the LED and aside from being slightly brighter (which was actually better), they look like incandescents as far as warmth goes.
http://www.swego.com/store/pc/viewPr...&idproduct=332
Good Luck.
__________________