Gauge light bulb spec?

Rbob said
...10watt might be a bit much...

You might just find melted plastic.

Another thing to look for while reading "those charts" is stuff like projected lifetime

I noticed you last bulb--the 50 watter--only had a projected life of 200 hours

Let's put that into perspective: If you say, were "on the road" and drove 10 hours a day, that bulb would only last 20 days!!!