The battery died?
That's what I was thinking also. Not sure how he pulled if off since the exhaust can only be a chassis ground. Unless he has some ceramic flanges or some other non-conducting high temperature exhaust material.
![Drool :drool:](https://board.marlincrawler.com/Smileys/marlin/drool.gif)
650 amps of exhaust death!
![Drool :drool:](https://board.marlincrawler.com/Smileys/marlin/drool.gif)