The 35LS126 lamp was made by Xicon and has been listed as obsolete (Mouser)
Manufacturer: Xicon
Product Category: Lamps
RoHS: No
Lamp Type: Incandescent
Lamp Base Type: Bayonet
Lamp Size: T-1 3/4
Color: Clear
Voltage: 12 V
Operating Current: 0.06 A
Life Hours: 10,000 Hrs
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CenterPoint Electronics (West Jordan, UT) HAS the bulbs for less than $2 each .. Time to Stock up !!
http://www.cpcares.com/xicon/Xicon_Lamp_Holders/35LS126.htmlYou could also substitute other T1-3/4 bulbs (bayonet base) at 12 Volts, 60 mA -- but may have shorter life hours.