[Wavery]

Originally Posted by ShrimpBurrito

It's a good method in theory, but the problem is that I don't think you aren't towing for long enough to make a quantifiable voltage change. Way too many variables.

harveyrv pointed me to this very handy clamp-on DC ammeter at Sears. IMHO, at $50, it's a steal, and it also measures AC current, and other multi-meter functions as well (voltage, resistance, etc.). It even came with a thermocouple and a nice carrying case. VERY handy in working on anything electrical on the TM, and in this case, it will tell in you 2 seconds what your status is while towing and how bad (or good). Someone at the rally may even bring one....I unfortunately will not be there as we are committed elsewhere.

Dave

The DC ammeter is super cool if you have solar panels too.