+1 on what e207 said.Sounds like a dirty post/terminal connection.

Also, you can disconnect the battery while the truck's running. If the truck keeps running, the alternator is doing it's thing. If it's not, the truck will die as soon as you disconnect the battery.

Jeff!
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RNT Knives... Go where you want, Take what you need!

Original Registration, NOV '07
Pre-crash post count - 396

"...the Earth will continue turnning, even when justice dies." (Revy Two Hand, Black Lagoon)