Gauge light bulb spec?
Interesting,
I have my instrument cluster out, pulled a bulb and it is a GE158. (67 Cuda)
So I go searching to find out the brightness of this bulbs (Lumens) and it is 25 lumens and 3watts. Checked on the 194 and it is same 25 lumens but 4watts.
I notice they are T3.25 Wedge spec so I search for T3.25 Wedge and there are a bunch of those.
http://www.elightbulbs.com/catalog_search_results.cfm?keywords=T3.25+Wedge
All the way to 10 watts! Although some are 7volts, 12v-14v.
I am going to give this one a try:
http://www.elightbulbs.com/Eiko-49031-1450X-Miniature-Automotive-Light-Bulb
Eiko 5 watt .357 AMP 14 volt T3.25 Wedge Base #1450X Xenon Miniature Incandescent Eiko Light Bulb Lumens????
10watt might be a bit much.