My 71 Suzuki T350

[jabcb]

09471-12001 is just a 3.4W instrumentation bulb. Still available from Suzuki. Probably can get one from your local bike shop.

09471-12022 is 35/25W and is no longer available. But I think I have the cross reference.
Per Crooks in the UK, its obsolete but a 35/35W A5677 bulb works.
http://www.crooksclassicparts.com/cgi-b ... id=1058381
http://www.crooksclassicparts.com/cgi-b ... id=1035675

Bulbster has the A5677 cross referenced to the 6235y & sells that bulb for $1.84
http://bulbster.com/lightbulbs/eiko-623 ... -2941.html

Dennis Kirk has the 35/35W bulb with the same numbers for $2.99 and for fitment they list the T500.
https://www.denniskirk.com/parts-unlimi ... p22290.prd

You can probably get the replacement for 09471-12022 at your local bike shop, just ask for headlight bulb 6235y.

Not certain, but it looks like the 6245y is a 45/45W version of the same bulb.

Let us know how the bulbs work out.