I bought one from Northern Tool.
http://www.northerntool.com/shop/tools/product_200140124_200140124
I installed it in my snowmobile trailer. I have two sled batteries on it in the off season and it works fine.
Maintains
Conditions
Desulfates
:thumbup::thumbup:
Bring a camera and plenty of batteries and memory cards. The cars you will see are awesome. Did the 2009 tour as a Long Hauler from Madison to Bristol.
Actually got to do some hot laps at Bristol. That was amazing. Make sure grab all the free stuff the vendors give out. Got to meet Vic Edelbrock...