Entity Larry Chase spoke thus:

> There are integrated units available .... But those I have seen cost
> over $250

Thanks everyone for the great suggestions, I've settled on this concept:
http://www.westmountainradio.com/rigrunner/whattmeter.htm

At $70 it's a good compromise, and it already integrates into all my
PowerPole connectors.
I'll send a consumer report when it's broke in.

-- Rachel
http://www.Gnarlodious.com/Vanagon/Vanagon.html