Spot light replacement light bulbs

Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models

Created: 2011 August 20

Updated: 2011 August 20

Some period spot lights which were commonly fit to police models (Moto Guzzi never produced a spot light for our machines) require light bulbs with a BA20s base (12 volt, 60 watt light bulbs with a 20 mm base). These bulbs were quite difficult to come by in the U.S. Thanks to Scott Peatross for sending me the following information:

The replacement bulb for [my] spot lights, (12 volt, 60 watt with the BA20s single contact base) is industry standard #A7278. Apparently was quite rare, but is now manufactured by Eiko. If you Google Eiko 660B you will find them readily available from many sources for less than USD $3.00 each.

Data from Eiko:

• Lamp No: 660B
• Bar Code: 48054
• Volts: 12.8
• Watts: 60
• Filament: C-6
• MOL in/mm: 2.60/66.0
• MOD in/mm: 1.42/36.0
• Avg Life: 75
• Bulb: SB-35
• Base: SC Bayonet European (BA20s)
• Watts amps: 60
• MSCP: 75
• Replaces: A7278 & 410-5018